I would discuss it with your T; when my T use to talk, sometimes it felt like she was firing darts at me :-) "zingers". See if you can get yet another side of you observing all of this that doesn't lose control, an over-archer self that can help you better understand what is going on. Discussing the word and how when she says it you feel funny, etc. with T should help you take back control and lose some of the "strangeness" for you. The dissociation on the drive home could be normal, depending on what you have been working on and what's going on with you; I remember one week I "came to" just as I was passing my exit and I was amused at the panic I felt (I was amused because I knew the area well and there were only about 10 ways I could get home from that spot so no need for panic), here was an automatic habit followed on automatic pilot broken, where was I/what do I do??? It's all "you" and all worthy of looking at in therapy with your therapist; I use to look forward to my dreams when I was afraid to go to sleep, I knew I'd learn something really interesting, that sort of attitude helps.