It makes sense that you are angry at your daughter now for being abusive and demanding but I'm wondering if you also had that attitude against her when she was a child. If you hated her when she was a child then I'm sure she would have picked up on that, which could explain why she's so angry and demanding. On the other hand, maybe you were a loving mother when she was a child, so in that case she could have a mental illness or she could just be a brat. I don't want to judge because I don't know both sides of the story.