I agree with you. But most of your post is asking "why" or showing confusion of how she could act like this. And to me that's simple - abuse of any kind does CRAZY things to all of us. And maybe that's her way of dealing it. Try not to take it personal, try to understand it sounds like she is hurt too... that does NOT make it right, but it does mean we can understand it.

I'm sorry she didn't react the way you needed. But now is the time for you to start healing. It sounds like you've grown a lot and are on a good path, keep walking, and take care