Oh, bleh, that sounds awful. What a terrible way to be triggered, when your T's voice is supposed to help you feel safe. I hope you are not still giving the tape a listen--chuck it. What can you do to remember you have a voice now, and the abuse is in the past? Something active (and loud) might help. I think it would be useful to make a note of this to yourself to bring it up to T when you do go back--it's important that she know that you can't always tell her when you are triggered.

Have a safe night. Be good to yourself.