Just reading this raises some spidey senses in me too! The only overt violation is the late-night-goving way over therapy time thing. I've had therapists give me 10-20 minutes extra if I'm nearing a breakthrough, but it was never a regular thing.

She sounds like she is very, very, very attracted to you and may be struggling internally to keep it together. If you see another T, it might be best for your success in therapy. If you are attracted to her and want to pursue it, just don't keep her as your T. I didn't catch the age difference, but I got the sense she is up to 9 yrs older? I don't think a relationship is the best idea, just saying if you must, don't p**p where you eat!