Your T will not mind discussing this again. My mother periodically did the same thing. Saying in this taunting way, "Oh, you were soooooooo abused," while rolling her eyes in this really exaggerated way. I finally responded, with "Yes. Yes I WAS." My dad asked me what I meant and I told him. He remembered the part that involved him and sincerely apologized. He asked her if what I was saying was true. She became incredibly angry, picked up a magazine and pretended to read it and refused to speak to anyone for the rest of the time I was there. That did stop her from doing it for a while.