I got a bit more clarity why I got so mad. That person had been very early before so that was not the first time that I experienced it. I had told T previously that it really rattled me to see that light go on and have to see it the last 10-15 minutes of my session.

So, when it happened again and she made the words and gestures that there wasn't much she could do about it, it fired me up. That's when I made the sarcastic comment about boundaries and how she's so good at enforcing them. See, if she has me trained to be attentive to boundaries, why isn't she doing the same with this other person?

Dang, me and T have good (?) stuff to work on next session.