That girl is going to be crying soon, because the crows talk to her and they told her she has AIDS, which is terminal.
Then when the protagonist meets her she appears at first to be a happy animal lover, but while they're alone together she collapses into his arms crying. She tells the protagonist that she has AIDS and won't be in this world much longer. The protagonist says "its ok, do me and you'll feel better" The girls says "but I can't I can't I can't I can't I can't"
They go on a few dates, she cries some more. The AIDS spreads and she's sick in bed for a while. While she's lying in bed immobilized, she says "it's ok, you can do me, I want it hard." It turns out she was trying to deny her slutty nature so her dead father wouldn't think badly of her, but she just wants to cock too hard.
So the protagonist fucks her and gets AIDS to.
Then bombs fall everyone dies the end.