I'm sorry therapy is so difficult for you at the moment.
I think you are doing the right thing by letting T know how you feel; this gives her the opportunity to get to know you better too, and also what your triggers are. I'm sure she's not triggering you intentionally.
Maybe wrap up the session 5 minutes earlier, and use those 5 minutes to reflect on your session with your T and mention what's bothering you. This will give you time to digest things with T, and hopefully you will be a bit more prepared to leave the session and feel ok. T hurts; it's hard work. Thinking and feeling about a session after it has taken place, is part of the healing process. This is what we call the hard-work part of therapy.

You are doing well and being so strong to keep going back for more. Please realise that your are growing and healing through this process, and I really do understand it is painful

(((ABBY)))