It's not exactly a confrontation, you have paid her, for her 100% attention for those 55min, or whatever. Your perfectly entitled to get what you have paid for.
My Pdoc doesn't even bring a phone into sessions, and I am expected to have mine on silent. Personally I would be bloody furious.
A defensive T is an awful T, how are you supposed to be comfortable enough to talk to them if I have to watch what you say, how the hell would she cope with negative transference, which is sometimes part of the job?
Sounds like she needs a new career choice, and I would tell her that too.
Anyway, all the best.