Thanks for sharing so vulnerably @crabs. The feelings of being abandoned must have been terrible. Have you said these to your therapist? I’m sure they didn’t mean to make you feel this way with their actions. My guess is that they felt the family counseling might help you make more progress in your situation and I hope they don’t just leave you in the lurch!
On therapist attachment, that’s kinda common I guess. @Marshmallow.youghurt shared more here: Fear of fully getting better
I think it’s important to realize that you’re more than just your mental health adversities. At some point, you’re going to have to lead your life without your therapist - maybe that’s the goal of therapy?