I'm sorry but what kind of T is that? Sounds like a dictatorship: she enforces the rules, makes snap decisions without taking your thoughts/feelings into consideration, no discussion whatsoever with the client, threatens and punishes you?!

This is not therapy. She is treating you despicably.

IF you were breaking any rules/boundaries, why on earth did she never bother discussing with you. Instead she slaps you for something you were not even aware was 'wrong'. Oh, please, kick her to the curb.

Attachment doesn't mean you have to accept shabby treatment from others. That will only reinforce her hold on you (+give her licence to treat you however she wants).