Then in the next episode, she bursts into tears at the hospital.
Kira: Helena? What happened to you?
Helena: I don't know...
Helena's gut-wrenching reaction to seeing Kira hit by a car. She looks more horrified than Sarah.
It's hard to watch Tomas put Helena in a cage. Given the nature of their relationship, it comes across like child abuse (even though Helena's an adult).
Watching Alison's "perfect" life spiral out of control until her friends and family host an intervention. While it starts off cheesy, it gradually gets more emotional, until Alison leaves crying because she can't tell them what's really going on.
Cosima finding out that Delphine was a neolutionist.
Delphine desperately trying to convince Cosima that she really does love her, she is genuinely trying to keep her safe and she would never put Sarah's child in danger. It sounds too good to be true, Delphine's heartfelt assurance are exactly what she wants to hear, and she cannot take the risk. The audience knows that every word is true. Cosima doesn't.
Delphine stoically accepts any and all accusations of betraying the clones to Leekie because she knows her own motivations and she trusts Cosima to hear her out. It's very clear that she is willing to explain herself for as long as it takes, and that she understands Cosima's anger. And then Cosima attacks the one thing she thought was real for both of them—the one thing that Delphine isn't confident about, the one thing that they both had treasured as utterly, completely real— and it shatters her.
Delphine:*tearful laugh* I had never been with a woman before-
Cosima: Yeah. It showed.
The way Cosima just gives a horrible, low, wordless wail as soon as the door closes behind Delphine. You can tell her whole world and all the hopes it had contained just walked away from her.
Helena crying and screaming as she tries to escape the cage, finally managing to get to her phone and immediately calling for help. She turns instinctively to Sarah... who shows up and puts a gun to her head.
Her first words when she's forced to call Sarah are a desperate "Is Kira all right? ...It was an accident!" She would never hurt that little girl, and everyone is convinced she would. And when Sarah shows up, Helena swears she will never try to see her 'angel' again. What happened to Kira wasn't her fault, but she feels like it was...
The look of utterly miserable resignation on her face when she thinks the one person she wants to like her is about to become her murderer is awful.
Helena: *dully* Do it.
"They patented us."
Cosima's horror is bad enough, but the look on Delphine's face when she realizes the true depth of what she was a part of...
"You killed the woman I've been dreaming of my whole life!"
The death of Helena. We all knew it was going to have to happen, but nobody expected it to be so soon, or so sudden. And the fact that even as she stands there covered in blood, having just beating the ever-loving crap out of Sarah, with absolutely nothing left to lose, Helena is still lost and confused and afraid. She only ever wanted to be loved... but she's too dangerous to be allowed to run free with no one to control her, and she doesn't understand.
Helena is like a fighting pit bull. She had it in her at birth to be an absolute sweet-hearted angel, to have just as much capacity for love as Sarah or Cosima; but she was beaten and abused, kept in cages, forced to become a killer because it was only when she killed that she was shown any kind of affection or approval. She hurts people, and she can't stop, and it's not her fault because she's like a child, in pain and confused and not understanding what love is. The only kindness Sarah could show her was putting her out of her misery, exactly as you would with a pit-fighting dog that can never be re-homed because they don't know how to not hurt people.
Kira is gone.
Even worse when you consider that everything Sarah did was to keep Kira safe. She almost went with Rachel Duncan for her.
"I want to know that my daughter won't have to live like this."
The music. The downbeat song just makes the end of the finale more emotional.
Aynesley's death and everything that lead up to it. She was completely innocent in everything and had no idea what was going on - all she knew was that her once best friend kept finding new ways to betray her for no discernible reason, culminating with her death by Alison's negligence. Made even worse by the fact that Alison let her die for no reason at all (as far as the viewer is concerned). Aynesley was moving away. Even if she was Alison's monitor, Alison would never have seen her again anyway.
During her arrest, there's a brief moment when Sarah locks eyes with her daughter, fear and shame plainly on her face.
Later, Kira says the whenever the police come, mummy goes away. No wonder Mrs. S thought Sarah was a bad mother.
When the wall that Cosima's been holding up against Delphine finally comes down: