I'm so sorry this has happened to you, Bloem.
Obviously, she is NOT well trained to established her own boundaries beforehand and became too involved with you. Not your fault, though it may feel like it.
I need a T who can take care of himself, so I don't have to. It took me long enough to trust my T to do so. I would be crushed if he told me stg like that. TBH, I would change a T if I were you- i would never ever be able to be open with her again- too scared I might "hurt" her again by being me- one of my fears in RL= one of the reasons I need therapy.
Please, take care