A lot of that sounds so similar to my experience. Four great years, then suddenly, I'm being yelled at and I don't know why. I'm being lectured. I'm being told horrible comments about myself. I'm not being heard. I'm being forgotten and ignored. What a crazy couple of months all of a sudden (my therapist didn't really revert back to normal). Geez did it make the Christmas break hard and I don't know what I'm returning to either.

I'm really sorry you're going through such a hard time. It's unfair when it happens like that. I imagine you therapist does care. Mine said that's where her anger came from, because she cared. I'm guessing that if there truly was no care then they surely wouldn't get so suddenly caught up and irrationally angry...

I hope you let yourself try again with your therapist. You deserve to have support through this difficult time.