I so agree that NONE of this is 'just' in your head, and am sorry if I gave that impression in my previous post. What I meant to say was that... the significant, awful-feeling changes in your relationship are having such an emotional impact that I hope you'll give yourself time to try out the new parameters in the relationship and that I think there is a good possibility to resolve the rupture.
I am very sorry your therapist has made this relationship so messy. It does sound messy, and the one part you wrote that I completely disagree with is " There, I said it. I am now officially an ungrateful, entitled little madam." You sound like someone feeling the rug pulled out from underneath, and you are. I know it's complicated a lot by the fact the therapy's free. I know. But you're entitled to your feelings, they are reasonable, and I just hope you two are able to work through them and you can get to a place of feeling more secure in therapy and back on track to more of that wonderful healing that you've mentioned getting out of the relationship many times.