I encourage you to actually ask T if she is intentionally pulling away. Let her know what you are sensing. You may be right about the pulling away. But the motive may be a theraputic tool. My T did this to me and I had to ask. He was doing it to give me more space to try to use my therapy tools to resolve issues on my own. It is called growing up the client.

I also learned that trust is something I had to first give myself. I had to learn how to trust my instincts in situations like this. I learned that not trusting others was perfectly fine. The fact is the world is a very inpredictable place full of people who change.
The only goal I have now is to build the trust I have with myself.
If I feel T pulling away, it serves me no good to sit around wondering if I am right or not. So I just ask. And that saves tons of pain and time!