Hmm... I'm sorry you're struggeling so much.
I have/had kind of the opposite problem: I didn't think my T could handle my "dark thoughts" without putting my IP.
So what my T did is: He asked me to tell him step by step and depend my next steps on how he reacts. E.g I first told him
Eventually I told him everything. He seemd worried all the time, but he did seem to trust me as long as I promised not do to anything. Maybe you could do something like that with your T?