I could be wrong, but I imagine she did that to cover her ***. I would find such behaviors intrusive. i also agree with Susannah she shouldn't be talking with your psychiatrist unless she got the ok from you first (regardless of whetheror not you signed a standard form). You're not a minor, right?

My T is not involved in my medical care, so its none of his business what medications I take or don't take unless I choose to tell him. The topic of medications has come up only 2 or 3 times in my therapy over years.

I have no idea how to regain trust. My T would never do anything like that, ever, but I'm having a trust issue now too due to some of his behaviors. Unfortunately, I have no good answer or have seen any other ideas on the threads. I can only wish you luck.