I'm so sorry you had to go thru that especially w/ a T that specialized in PTSD & yes, they are hard to find. She should've known better than to trigger you & not help.

I know that when my T triggers me it's not on purpose & she's told me she "won't walk on egg shells" around me worrying about my triggers bec I'll be triggered enough in real life. I notice when she does trigger me it takes me a good two days to tell her about it. I guess I need time to think, process & figure out how to tell her. Then we might talk about it. It's not easy in the least but she doesn't sympathize. I'm sorry you ran I to such a tight frame of mind w/ your therapist.
You deserve better!