This is amazing and I love it!!! The bland/insidious horror of being 'promised freedom' and 'graduation' and 'nothingness', and then the way she treats the butterfly. And how that's closely followed by her casual dismisal of Clint being 'squeamish' about separation; that way she treated a reaplacement/cover showing she does have feelings about this, but how they're... misdirected. Then the way the guards 'can't stand the screaming'. And the slowly realising: Or maybe, she thinks now that she's seeing it again, it's one thing being pulled into two. The 'we always have to come back' and how sluggish Natasha's deamon responds. Argh, you've got her viewpoint where all of this is normal and how the horror seeps through is just so well done.

Also I liked 'playing possum', ha.