I do this, too. I feel like it is a completely normal thing to do.
It helps me get from session to session, I think. It really helps me relive the connection that I feel in T, so that helps bring me to a more relaxed and comfortable state. Also, if I'm going through a difficult situation, I imagine how T would coach me through it, and what she would say. Doing that really helps me a lot.
However, I've never talked to T about this. I'm not opposed to it, but right now, there are more pressing issues to deal with for me.