I understand how you feel.I shared something very personal with my care co-ordinator that id wrote into a poem i said i wanted it back.
She told me she had put it in my file and didnt give it to me back.I'm still very upset about this myself.
You put trust in your t and it felt like she was breaking it.At least you got it back though.Maybe nxt session you could discuss with her how you feel about it.