I've read the whole thread now. This sounds immensely hard. I hope you can find a way through this that has a good outcome for you and your children.
I was trying to think of ways to bridge the gaps and overcome the issues, up until I read your last post.
I had been thinking it was just disagreements on the issues, but it sounds like she has taken part in some really disturbing actions?
Given all of the things she's been involved with, I'd find it very hard, I'm afraid, to maintain respect for someone who intimidated women or bullied people. I sincerely hope she doesn't and hasn't done this to you, Sapphos.
Here is what I was planning to say before I read your last post:
Could you have a discussion on the subject without mentioning the subject? Can you discuss your feelings without getting drawn into arguments or any of the issues? Can you say how it makes you feel to have her look at you like that or call you 'cis' or whatever? Just to kind of try to lay some groundwork so that you defuse the situation a little, was my thinking. To let her see how you are feeling and agree to maintain respect and good intentions.
However if she has actually been violent, abusive or threatening, I don't know if I would advise that, at all.