I had something similar in my last session and wrote a new thread about it.

My T advised me to steer clear of traumatic memories because I can't handle them well and end up blacking out. For me I have to learn grounding techniques so I can comfortably talk without having an episode. Maybe your T wants you to explore the feelings attached to the memory rather than the event itself?

I don't know what your T was thinking, so I can't say this is what happened, but I know how you feel. It's like the one avenue you have to reach out to feels like it gets closed down and you're stuck again. Be as honest as you can be, tell her how she made you feel. She needs to know when she's 'disappointed' you (not sure how else to describe the let down feeling). She's the only person who can tell you why she acted and behaved the way she did.

Good luck, I hope it goes well for you.