Beth, I understand your frustration with the therapy inconsistency and soon to be missing your doctor B. I'm curious if, putting her illness aside, do you otherwise like and feel comfortable with Mary? If so, maybe when she's well the frustration will ease. If she is sick, it's definitely not her fault.
This morning when I read about your roller skating, Blondie's "Heart of Glass" came to my mind, so I watched the video. It is definitely a great song for skating, in my book.