I never thought I'd feel relaxed enough with a T to allow her to touch me, even though I used to fantasize about Ts holding me. My current T initiated it by offering hugs and asking if a child part( I don't have DID, I just mean a young, needy part of me) wanted to hold her hand. Her touch felt so safe and soothing, that it became part of my therapy.

Yes, it helps me feel calm and safe. I don't remember feeling that way with my mother. I think she was too anxious. I know that not many Ts do SE, and there are other ways to feel that bond with your T. I would tell her how her letter made you feel. It is definitely "grist for the mill," as the saying goes.