I have been reading along, but never commented!
I hope you are able to get out this abusive relationship as soon as possible!
I think sometimes the problem with abusers and predators ( as someone justly labeled your ex therapist) is that they are not always bad. It’s easy to label something as abuse when someone is just plain mean as abusive, it’s harder when that abuse comes with sweet words and drips of apparent kindness and love. You start to think am I crazy l, is it me? Maybe I am the bad one? This is just textbook gaslighting.
Second, I echo everyone’s comments that this is reflecting on your early relationships. Sometimes an easier way to resolve a situation is not the straightforward way. Maybe if you keep working on your attachment issues and childhood wounds you might find that this situation might resolve itself, and you might see the situation for what it is: abuse! A healthy attachment can show you that your are worth it and deserving and you’ll then be less likely to take abuse like this as the norm.
Lastly, I saw someone suggested to write a “thank you but no thank you letter”. I thought this was brilliant! You are not really thanking her you’re just trying to get rid of her. Sometimes with this type of people acting I emphasize acting like you have no bad feelings towards them is the best way to get rid of them, otherwise they keep getting some supply from you and won’t leave you alone. As she keeps getting an emotional response from you she will keep pushing. The more you tell her she is abusive the crazier she will get. Just leave as though you have no hurt feelings and work on this hurt feelings in your current therapy! She will NEVER understand. If you keep arguing with her it’s because a part of you still wants to resolve the situation and has a little hope that she’ll understand you one day. She won’t. She never will. I think this could also be part Replaying a childhood dynamic. Are you trying to get someone who doesn’t love you and abuse you to start loving you again so you feel worthy? You can also read about the grey rock method. About how appearing boring and with nothing to give as a good way to get rid of these abusive people from your life.
Good luck to you!