It took me quite a while to feel a connection with my T, and it still comes and goes. Like a lot of us here, I have a REALLY hard time trusting someone, believing they'll really be there for me and not hurt me, believing that if they see the "real" me they won't run for the hills. It's been baby steps, for sure.
I agree with Echoes...talking to T about your concern might help. I know that my connection with T was built by talking about the relationship between T and me - the good parts, and the hard parts. Then I could start sharing some about the trauma stuff. But we always come back to our relationship, before I can share a little more - like a spiral or something.
Good luck to you. Therapy is hard!