I don't even get to the "I can't talk" because such a big part of me doesn't want to. It's a catch you know? Wanting to get better and yet not always wanting to do the really hard stuff.
I struggle with the same thing. One one hand you want to get better, which means addressing it in therapy, but talking about it is hard, scary, and as we've all discussed, causes symptoms to get worse before they get better.
In my therapy, when we decided to start talking about it, he would ask me at the start of the session if I wanted to talk about it that day. I would say yes, but then immediately changed my mind and told him no. Somehow though, as we talked about the things going on in my life, it would tie back to the abuse. In the end we wound up talking about what happened to cause my PTSD. It was hard and uncomfortable. My nightmares came back, my other symptoms spiked, but it got better in time.
I was so worried about going to my next appointment thinking it would be a repeat of the previous week. But we didn't talk about the past abuse. I felt like we should - I mean you know, to just get it done and over with. He kept the conversation on present-time issues.
I think it's a good system, we are working through the past little by little, but also focusing on what's going on in the here and now so I can learn to cope and keep living my life the best I can right now. Honestly, I think with this system of about 1/3 abuse work and 2/3 present-day work I am healing and progressing faster than I ever have before. Maybe you and your therapist can work out something like that or something else that will help you get what you need?