It sounds a little more like you're writing a psychopath than an autistic woman. I mean, maybe she's based on your experience, but autistic people are typically highly emotionally empathetic. The element of empathy that is impaired in autistic people is understanding why people feel a certain way and what they expect of us, the element that is understanding when someone is in pain and hurting for their hurt is intact. In psychopaths, it's the inverse. This is why just last week or so there was a thread here where people were talking about how they heavily dislike violence in video games and movies. Any autistic person I've ever known would lose sleep over killing someone for a long time, even if it was self defense.