* DeathOfTheAuthor: A theory Libba Bray seems to fully espouse, often answering questions with "that is open to interpretation" or giving her idea but adding other people may see it differently. According to her, "[[http://libba-bray.livejournal.com/27836.html It will be YOUR job to assign futures to Gemma and her friends, to imagine what roads they travel, what adventures they might have next, whether they find love and success and contentment, and if they do, to imagine what forms that happiness takes]]."
* SugarWiki/FunnyMoments: Several of Gemma's [[DeadpanSnarker snarky]] inner monologues, and translations of what people say to what they actually mean.
* LesYay: There's already canon lesbianism, but given that most of the major characters are female (and often ''really good friends'' with each other), there's no way these books wouldn't be rife with this. Name two female characters, any two female characters, and you can probably make a pretty good argument for it, especially if [[LauncherOfAThousandShips Gemma]] is involved.
** Not to mention the part in the first book after the girls get drunk for the first time. [[spoiler: Felicity seemed really happy to show Ann how to "be intimate", complete with pulling one of the sleeves of her dress down to the point of seeing her..cleavage.]]
** This is also used in-universe: when reading about Mary and Sarah, the girls immediately wonder if their unusually close friendship is actually a cover for them being "Sapphists" (lesbians).
* SugarWiki/MomentOfAwesome: Bare minimum, three per book. As a conservative estimate.
** In ''The Sweet Far Thing'', Gemma finally confronts the Rakshana when [[spoiler:they threaten to kill her brother.]] She quickly demonstrates [[BadAss what]] [[BewareTheNiceOnes a bad]] [[CurbStompBattle idea]] [[MamaBear this is.]]
** In Rebel Angels, Gemma & Co. are cornered by the Poppy Warriors, and the leader is teasing Felicity about [[spoiler: her father raping her as a child]] in attempt to torment her into suicide. Not only does Felicity not give in, she shoots him through the throat, facilitating their escape, and later shows signs of beginning to overcome her shame and guilt and accept that she is not to blame for what happened to her.
--> "He shouldn't have said those things to me," she says in great hiccuping cries. "He shouldn't have said them."
-->It takes me a moment to realize that she is talking about Azrael and what happened in the catacombs. I think of her standing on that rock, piercing our tormentor with her arrow. "You mustn't be sorry for what you did."
-->She looks into my face, her sobs subsiding to a cold, tearless fury. She hoists the nearly empty quiver onto her shoulder. "I'm not."
** Impossible to forget the [[SugarWiki/FunnyMoments hilarious scene]] when Felicity causes [[MagnificentBastard Lady Denby]] to loudly break wind after harassing Ann in ''Rebel Angels''
* NightmareFuel: Plenty of it dispersed throughout the three novels, including but not limited to some of Gemma's visions (especially in ''Rebel Angels''), the Poppy Warriors, the water nymphs, and some of the more supernatural nighttime occurances at Spence.
* SomeAnvilsNeedToBeDropped: Felicity's "ghost story" about the lives that await her, Gemma, Pippa, and Ann if they accept their roles as Victorian women is not subtle in its feminist message, but it's no less effective for that.
* TearJerker: The scene in which Gemma realizes that [[spoiler: Felicity]] was abused as a child, particularly when she warns Polly to always lock her door at night.
* UnfortunateImplications: It's a little awkward that [[spoiler: Felicity]], who turns out to be a lesbian, was sexually abused as a child, since it plays into the not-uncommon but erroneous belief that [[RapeAndSwitch lesbianism is caused by bad experiences with men]]. That doesn't seem to be the author's intention at all, but...