(Hugs) sorry you are having a tough time. It is always very difficult not getting back from someone when you were counting on it.
I think an important thing to remember is that she may just be setting boundaries. You have had some really extreme emotional reactions to therapy and your therapist lately. I think maybe thinking about a more intensive option at this point would be good. Maybe I'm protecting my own current needed for containment, but I'm seeing that in your posts as well. Look into a trauma program or dbt program or even just an intensive day program. I think it would be helpful. It's not the most fun option, but I see you spiraling out, and that worries me. Please take care of yourself.