Buffy's Little Sister-
The monks had to take the girl from somewhere, and there weren’t many places little girls commonly went missing.
Well, there was one place. Rapture.
Was it so wrong of them to take a poor miss-used girl and give her a life at the surface? What the monks didn’t know was that after a while the ADAM hidden in the girl’s system would start to manifest into her own plasmids. Or that when one had the power of the Key shoved into their body there was no use for Eve.
She could set things on fire, freeze things into solid ice, move things with her mind, and call a swarm of very scary, suicidal bees.
Dawn did not understand what was happening to her. But as she looked down at Tara’s dead body she knew she had to do something. That she had to do something to the Angel… Something.
I don't own Buffy or Bioshock, but this little ficlet would not get out of my head since the part of Bioshock 2 where you get to be a Little Sister.