(((ThisWayOut))) - oh gosh. Yup, I sometimes react this way with friends even - out in the real world!

I think you've already got some great advice (re: talking to your therapist). In terms of dealing with the feelings now... can you think about things your T has said/done or ways she's reacted that were very different from your parents? That might help ground you to the present reality, maybe?

And, as far as being in therapy and unable to disagree or respond, I am like that alot I kind of wish we could make little cards or flags with messages to hold up at times like that... like...

"Help! You're scaring me, and I can't say anything!" or
"My brain is not responding at the moment... can you be a little gentler?"

Hmmm maybe I should make them and sell them online

Take care...