It looks like you are feeling a little bit better, but I wanted to reply anyway. You are a strong person. There was a time when in your shoes I would have looked up every bit of information I could about her and then made her suffer. Some people NEVER believe the truth, even if you show them direct evidence of it. What she believes is irrelevant to your life and she will end up causing herself only misery through her hatefulness.
I'm glad you have support and people you could talk to about all this.