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Blood Sisters by RLD Flame-point Callie-co is a crossover series between The Twilight Saga and Lost Girl. When James’s attack on Bella Swan reveals that she isn’t as human as she believed, Bella and the Cullens find themselves exploring a new part of the world as they attempt to learn more about Bella’s family history. At the same time, a final confession from Aife leads to Bo learning that she has a sister named Isabella. When Edward contacts Bo for help based on her own experience of being a fae raised in the human world, the two swiftly realise that Bella is Bo's sister, prompting the succubus to travel to Forks to learn more about this newest addition to her family.

The author has confirmed that this will be a three-part series (Although only the first part has been written so far); Blood Sisters, Blood Feud, and Blood of the Ancients.

Blood Sisters contains examples of:

  • Accidental Misnaming: When Bella finds Bo having a threesome with a blonde and a redhead, Bo is unsure which of them is Ashley and which is Celeste, but neither woman seems that bothered about the mistake.
  • Adaptation Species Change: Bella Swan is a succubus rather than a human.
  • Adoption Angst: Bella has a serious identity crisis when she returns to Forks after learning about her true origins, feeling as though everything about herself is a lie apart from her first name (the person who gave her to Charlie and Renee specified that her name was Isabella). Charlie experiences a minor version of this when he learns that Bella has met her biological sister, although he's privately relieved that this means Bella hasn't met a biological relative who'll "replace" anyone in her existing family as Bella has never had siblings before.
  • Armor-Piercing Question: Carlisle helps Edward get over his religious concerns about pre-marital sex by pointing out that, if God exists, He must have created the fae as well, and no truly loving God would condemn a creature to Hell simply because of their appetites.
  • Artistic Licence – Biology: With no knowledge of what she "needs" to feed on, Bella's condition starts to deteriorate, with her bones becoming frail and brittle since she isn't taking in chi energy. Carlisle is able to slow this with vitamin shots for a time, but notes that it's important they learn what species Bo is so that she can instruct Bella on how to feed.
  • Asshole Victim: Discussing how Bo and Dyson met when he was investigating one of her victims, Kenzi makes it clear that said "victim" had roofied her drink and was clearly about to do something unpleasant to her if Bo hadn't stepped in.
  • Beethoven Was an Alien Spy: It’s mentioned that one of Vincent van Gogh’s friends was a leanan sidhe, accounting for his artistic talent and his mental decline.
  • Canon Welding: The Cullens and the Quillettes are aware of the wider fae community, but are considered pariahs among the fae as they make an active effort to live among humans. It’s also noted that wolf-shifters such as Dyson are basically intended to be the same species as the Quillettes, with a few edits to both to make them a suitable blend, such as Dyson being capable of imprinting.
  • Charm Person: It's suggested that the reason so many people were interested in Bella when she arrived in Forks were because her succubus pheromones were kicking in, Bo noting that she suddenly attracted attention from her fellow students at Bella's age as well. Bo soon starts training Bella in how to do this on purpose.
  • Chronic Hero Syndrome:
    • Bo is slightly disappointed that Bella is less interested in actively helping people as she doesn't feel that heroic, but recognises that Bella has the right to want a quieter, safer life and she ended up dropping into her own role basically by chance.
    • Suggested for Jacob; when he talks with Kenzi and confirms that she doesn't seem to be being mistreated by Bo, he's glad that he doesn't have to risk defying his father by trying to stage some kind of "rescue".
  • Contrived Coincidence: When Edward first calls Bo to explain Bella’s situation, Bo immediately wonders if this is a trap, considering that she just learnt that she even has a sister and is now being told of an unknown fae of that name, but agrees to a DNA test to make sure.
  • Crazy Jealous Guy: Edward becomes uncomfortable seeing Bella experiment with her succubus abilities, even as he understands it's a good idea to learn what she can do so she doesn't do something by accident, becoming concerned that Bella will move beyond him if she keeps changing.
  • Crossover Relatives: The premise of this series is that Bella Swan and Bo Dennis are sisters, with Bella being the younger of the two by around a decade.
  • Double Meaning: When Jacob and Kenzi run into each other in town, Kenzi notes that Jacob's questions at least strongly suggest that he knows Bo is fae and that Kenzi is "legally" her property by fae standards, but he says nothing that she can't also interpret as him being concerned that Bo is a controlling friend.
  • Easily Forgiven: Bo and Dyson are each initially angry at Trick for lying to them, but once he explains his reasons they each accept that his intentions were good. Bo acknowledges that Trick wanted to be sure of what she knew about Aife and just didn't know how to broach the topic once he was sure of her, and Dyson appreciates Trick's explanation that he basically misunderstood the nature of the imprinting process (although both make it clear that they won't be happy if Trick lies to them "for their own good" again).
  • Emotion Eater: As in canon, most fae are this, leaving Bella disturbed when she doesn’t know what kind she is as she refuses to accept an appetite where she might have to (for example) drive a man suicidally insane just to sustain herself.
  • Ethical Slut: Brought up when Bo mentions that she doesn't get involved with partners who are already happily married (she's willing to do threesomes, although given past precedent with the Fury she appreciates that can be risky).
  • Everyone Has Standards: The entire Cullen family leave their house when Bo has an orgy with a group of people she met in a local bar (although Bo notes that the Cullens were the reason she was so horny in the first place, as it was "date night" for the three couples in the Cullen family).
  • Exact Words: Invoked when one of Dyson's interrogators tries to use his claim that he would be willing to lie for Bo as proof that he's done so, but his interrogator quickly points out that Dyson just said he'd be willing to lie for Bo but he hasn't actually done so yet.
  • Famed In-Story: The Cullens are all impressed when Dyson affirms that he was a member of the Faelad Laignach centuries ago.
  • Fantastic Racism: As well as the fae’s canon dismissive attitude towards humans, it’s noted that vampires like the Cullens are generally ignored by the wider fae community as they were originally human rather than being natural fae from birth. When the Cullens first learn what species Bella is, Esme's immediate reaction is surprise, but swiftly reminds herself that simply because succubi have a reputation for being "fickle, hedonistic and promiscuous" doesn't mean they can't be perfectly nice people and she shouldn't judge Bo and Bella because of their species.
  • The Fashionista: Alice is this as always, immediately offering Bella advice on what to wear for her first meeting with Bo. This leads to her and Kenzi quickly bonding over their shared interests in clothes even if they have different styles. Alice later helps Bo and Kenzi find different outfits for dinner with Charlie as their usual style would make an awkward first impression at best.
  • Funbag Airbag: A minor version; when Bella collapses from weakness, she basically ends up face-first in Kenzi's cleavage until Bo can give her sister a boost.
  • Gene Hunting: Once the Cullens learn that Bella is fae, they work to help her learn more about her birth family, driven by the practical concern that they need to know what her abilities are in case she manifests something dangerous and what she needs to eat to sustain herself.
  • Godzilla Threshold: James's initial appearance was such a shock that Edward briefly thought about officially claiming Bella to protect her from the other vampire, even when he and his family dislike the notion of claiming humans, but dismissed that idea as Alice could see James wouldn't respect the claim anyway.
  • Hair-Trigger Temper: Invoked in-narrative; while Dyson and the Quillettes are basically meant to be the same species, it's noted that Dyson is more self-controlled than the Quillettes with their hostility towards the Cullens. He observes that when shifters are in their teens and still mastering their other side it doesn't take much to set them off.
  • Has a Type: Kenzi observes that Bo has a thing for "hot cops" after Bo comments that she thinks Charlie is attractive (even if she respects Bella's request not to go after her father). She also suggests that Bo likes "blonde doctors" and wonders if Carlisle should watch out, but Bo affirms that while she can see that Carlisle is attractive she won't get involved with partners who are already married.
  • Have I Mentioned I Am Heterosexual Today?: Kenzi immediately rejects the idea of being used as part of Bo's efforts to train Bella in how to use her powers
  • Healing Factor: Bo gives Bella a quick boost of chi in their first meeting, but it's only when Bella first "feeds" on Edward that she confirms her own ability to heal, with her broken leg experiencing weeks of healing in seconds.
  • Hypocritical Humor: A minor example occurs when Bo is uncomfortable at the notion of Rosalie and Emmett having sex in her car when she's obviously done that herself, Bo's only justification being "I can do [that] because it's my car!"
  • I Just Want to Be Special: While Bella was eager and willing to become a vampire, she’s still thrown to learn that she’s actually already fae, particularly since this means her family have been lying to her for years.
  • Ignorant of Their Own Ignorance:
    • Dyson isn't aware of succubi breeding issues so Bo having a sister is just a surprise rather than the shock it was for others. The Cullens were also unaware of this problem before Bo explained the details to them, Esme noting that she assumed succubi not having children was a matter of choice rather than biology.
    • Likewise, Trick was unaware of the finer details of the imprinting process, as he assumed it would make Dyson fanatically loyal to Bo regardless of her wider agenda and he was still concerned she might be allied with Aife. Dyson clarifies that others are generally only aware of the most extreme cases of imprint-related problems, and if he truly objected to Bo's actions he would have been capable of acting against her.
    • When Jacob talks with Kenzi and observes her talking about Bo as though Bo is her friend when he always assumed other fae were more controlling of their human "pets", he wonders if he has the wrong view of fae-human dynamics outside of Forks or if Bo and Kenzi are just unconventional.
  • Immortal Procreation Clause: Trick explains that succubi are one of the few fae species that are potentially immortal (most only manage a millennium or so), since their chi-eating can sustain them easily and they don’t generally live violent lives. However, to contrast this potential immortality succubi have a low birth rate; Trick had been aware of Bella’s birth but assumed she died as an infant like most second-born succubi, and it is apparently so complex for succbi to have children that Bo never had a pregnancy scare even when she didn't know what she was and sometimes wasn't particularly careful while on the run.
  • Imprinting: It is affirmed that the process of imprinting isn't as "complete" as it is in the original novels, Dyson explaining that it is possible for a wolf to go against an imprint; most of the extreme cases reported happened with weak-willed wolves or those who had obsessive tendencies even before they met their mates.
  • Improperly Paranoid: Jacob has a minor version of this when he's immediately concerned about how Kenzi almost certainly "belongs" to Bo and there's nothing he can do to help her, unaware that Bo only claimed Kenzi to protect her and doesn't see her as any kind of property.
  • Innocently Insensitive: As Bo gets caught up in the plan to meet with Bella, Kenzi is struck by the distinction between her considering Bo a sister and Bo’s discovery of her biological sister, leaving Kenzi concerned that she’ll be pushed aside in favour of Bella now that Bo has a biological relative.
  • Internal Reveal: After Dyson learns that Bo is his imprint in Chapter 5, Bo only learns that fact in Chapter 17.
  • Intimate Healing: Bo and Bella are capable of this, but at first Bo is the only one who knows how they feed; at one point she has to give Bella a boost of energy through a fae form of mouth-to-mouth and then have a quick session with a waitress to give herself a pick-me-up. Bella is very awkward when asking Bo if there are any special measures she and Edward need to take when feeding, but Bo assures her that it will all come naturally when they get started.
  • Like Brother and Sister: Kenzi privately acknowledges that she thinks of Bo as a sister, but is struck by the implications of Bo’s discovery that she has an actual sister.
  • Long-Lost Relative: After the two learn that the other exists in Chapters 5 and 6, Bo and Bella's first meeting takes place in Chapter 9, as the two sisters first come face-to-face.
  • Love Confession: When Dyson comes to Forks, he swiftly tells Bo that she is his imprint, which basically amounts to this even if he makes it clear he doesn't expect anything more from her than she's willing to give.
  • Manchild: Emmett comes across as this as always, with his immediate reaction to meeting Bo to ask her various questions about her initial trial by combat.
  • Metaphorically True: When Charlie sees Bella after her first "feeding" and realises she's looking better, Bella claims that Carlisle worked out what was wrong and gave her "new medicine"; this is basically accurate in that the Cullens helped Bella determine what was wrong and how to fix it, but it took Bo to confirm what was needed.
  • Mistaken Ethnicity: The confusion between vampires and succubi is explained as basically a fantastical version of this. Edward attributes the confusion to the Denali sisters getting very into seduction for some time while they still fed on humans, causing people to assume they were succubi rather than vampires.
  • My Greatest Second Chance: Bo observes that Bella is very similar to what Bo was like before her powers activated, to the extent that Forks reminds Bo of the town where she grew up. Talking with Kenzi prompts Bo to reflect that she's looking forward to helping her sister get the answers that she only found after several years, particularly since she can help Bella avoid some of her own mistakes while learning about her own abilities.
  • No-Sell:
    • Unlike in canon, the Norn cannot take Dyson’s love for Bo as she is his imprint, which is the kind of bond even the Norn cannot break.
    • Bella's immunity to Edward's mind-reading appears to be genetic, as Bo is also immune to Edward's ability.
    • When Bo starts training Bella in using her succubus abilities, Bella is unable to "seduce" Edward with her powers, which they speculate is because he's already in love with Bella so he doesn't notice any compulsion.
    • Where Alice couldn't see the future of anything that wasn't a vampire or a human in canon, here she can apparently see the future of most fae breeds, but shifters represent an anomaly. She speculates that this is because part of their nature is an animal, meaning that shifters can change so significantly that it's harder for Alice to predict what they'll do.
  • Noodle Incident:
    • When talking with Kenzi about Bella, Bo mentions how she basically avoided sex after Kyle's death until she was hitch-hiking and a truck driver tried to molest her while she was nearly unconscious, triggering her feeding instinct and helping her confirm what she needed to do to sustain herself.
    • Kenzi mentions that she once had a "brief venture into the culinary arts", which was actually her posing as a gourmet chef to rob the attendees at high society events.
  • Oblivious Adoption: Bella was never aware that she was adopted until Edward tells her that she’s fae and therefore Charlie and Renee can’t be her biological parents.
  • Orphan's Ordeal: Bella is completely shocked to learn that she's fae and therefore only adopted by the Swans rather than being their biological daughter, spending the next few chapters tormented by her fear of what she might be in terms of her diet.
  • Parental Sexuality Squick: Brought up when Bella is disturbed at the suggestion that Bo and Kenzi think that Charlie is attractive.
  • Refuge in Audacity: After Bella's healed her injured leg, she basically decides to rely on this to avoid Charlie asking awkward questions, reasoning that he's happy not looking too closely at strange things and he'll just appreciate that she's better (although she also plans to introduce him to Bo to give him something else to think about).
  • Riddle for the Ages: While Edward cannot answer Kenzi's questions about how his type of vampire (humans transformed into fae) exist, he observes that one theory is a fae sorcerer created the original venom as a particularly torturous poison.
  • Right for the Wrong Reasons:
    • When Lauren rejects Bo’s offer to run away with her, Bo correctly realises that there is something Lauren is more loyal to than any relationship with her, but assumes it’s her loyalty to the Ash rather than Lauren’s determination to find a way to save Nadia.
    • Seeing Bella's continued injury causes Bo to wonder if this is an example of the birth defect second-born succubi can suffer from, but is assured when she learns that it's just because Bella didn't know what she was so didn't know what she could do to heal.
  • Rules Lawyer:
    • This is exploited to stop Dyson requesting sanctuary when he's called as a witness to Bo's recent activities, as he can't claim sanctuary if he isn't actually accused of a crime but there's equally nothing to stop the Ash's forces keeping him locked in a cell for a long time until they get around to him...
    • While the treaty between the Cullens and the Quillettes stops them turning other humans, that doesn't affect pre-existing claims of other fae who have come to Forks, so Billy Black affirms to Jacob that they can't do anything about Bo's claim on Kenzi.
  • Screw This, I'm Outta Here: Trick ultimately tells Bo that she should take advantage of her discovery of Bella to get out of the city for a while, so that she won’t have to deal with potential accusations that she was involved in Aife’s attack.
  • Ship Sinking: Bo’s talk with Lauren while getting Bella’s DNA tested confirms that Bo and Lauren’s relationship will never go further. Lauren is too tied to her service to the Ash to properly move on with Bo, and Bo feels that Lauren’s inability to accept her own motives and willingness to risk her life to make a statement proves that they wouldn’t be a good fit.
  • Shipper on Deck: After Dyson arrives in Forks, once Bo explains their history to Bella, Rosalie and Alice Bella is fully supportive of her sister's new boyfriend.
  • Sidetracked by the Analogy: When Bo tells Lauren that she has a sister, she assures the doctor that she knows that the odds of succubi having siblings are like unicorns, which prompts Lauren to go off on a tangent about how unicorns actually have a rather good birth rate before she gets her attention back to the matter of Bo's sister.
  • Slap-Slap-Kiss: When Dyson arrives in Forks and visits the Cullens, Bo's immediate response is to punch him in the face for staying away for so long when she could have used his emotional support after everything that happened, but they soon get back to more intimate activities.
  • Sticky Fingers: Kenzi is so used to stealing things to sustain herself that Edward observes that she's automatically thinking about how much she could sell the Cullens' things for if she managed to successfully steal something from their house. However, backed by assurance from Bo, Kenzi confirms that this is just an automatic response and she doesn't actually plan to steal from the vampires who are helping Bo's sister.
  • Swapped Roles: When Bella and Edward have their first intimate encounter after learning about Bella's species, she's struck by the fact that for once, she is the one telling Edward that he tastes good (albeit his chi rather than his blood).
  • Switched at Birth: Charlie and Renee’s actual child was stillborn, but shortly after the birth someone literally gave them another baby (Carlisle speculates this party was a fae who compelled the Swans to adopt Bella, which Edward basically confirms when Charlie can’t properly recall anything about the other party).
  • Take a Third Option: The Cullens (who define themselves as Light Fae) are surprised to learn that Bo deliberately chose neither side, but accept her as Bella's sister and a guest nevertheless.
  • Terror at Make-Out Point: When Dyson comes to Forks, he and Bo basically role-play a version of this, with Dyson "chasing" Bo through the forest before they finally have sex.
  • That Man Is Dead: Learning exactly what she is prompts Bella to reflect that in many ways, "regular old Bella" is gone, leaving her afraid that she doesn't know how to be her new self.
  • This Is My Human: Bella is concerned to learn that fae can basically "own" people, but is assured that Kenzi is just Bo's friend (as far as the two are concerned) and Edward never "claimed" Bella when he thought she was human. The Cullens and the Quillettes are also shown to disapprove of this idea; Edward assures Bella that he only ever thought of claiming her (before they knew she was fae) when he thought it would help protect her from James, and Jacob is disturbed at the idea that Kenzi could be Bo's "property" and wishes he could "help" her (unaware that Bo and Kenzi consider themselves friends rather than master and 'slave').
  • Took a Level in Badass: Bella learning how to use her succubi powers is a clear example of this, as she wants to reach a level where she can be Edward's equal and feel like she has some power in her new life. Her regular 'diet' of vampire chi also gives her some physical enhancements, such as going power-walking to burn off excess energy. This leads to Bo teaching Bella how to fight so she can protect herself and use that strength more directly.
  • Truth Serums: When Dyson is finally interrogated about Bo's role in Aife's attack, the interrogation is aided by a luduan, a fae that compels the truth and ensures that Dyson cannot lie (it is at least suggested that Dyson would be able to lie under its interrogation, but he never does so and the luduan asserts that he would be aware if Dyson was trying to deceive them anyway).
  • Unreliable Narrator: Suggested regarding Bella's description of Charlie from the books compared to his portrayal in the films; Word of God speculates that Bella obviously didn't think of how Charlie would come across to others as she just sees him as her father.
  • Well-Intentioned Extremist: Basically Trick's reasons for preventing Dyson from being aware that Bo was his imprint, as he was worried that if Bo did turn out to be affiliated with Aife she would drag Dyson down with her. As Dyson observes, imprinting on Bo wouldn't actually have turned him against Trick like that if he really objected to what Bo was doing as the effect of an imprint on the wolf in question isn't so great that he wouldn't be able to resist if his partner did something he truly didn't agree with.
  • What the Hell, Hero?: After hearing Trick and Dyson claim that they lied to her to protect her, Bo ultimately calls Lauren out for also adopting this attitude, arguing that she has the the right to make her own decisions regardless of the risks.
  • Why Can't I Hate You?: Rosalie reflects that she wondered if she'd resent Kenzi for similar reasons to her past issues with Bella, but soon finds that she gets along well with the human.
  • Wrench Wench: Rosalie and Emmett immediately volunteer to give Bo's car an overhaul when she first meets the Cullens as they'd enjoy the project, although Bo guesses that the two are also going to have sex in her car.

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