Introvert55 has come back and said she has had a talk with her husband and he has agreed not to see this therapist again.
She also has the dilemma of whether to report her or not? Personally, I would not! Reason being it is very hard to prove if someone is out stepping the boundaries and what can be mis-understood. Not suggesting in any way the Op is wrong, it is odd but unless the OP feels that she wants to go that route of interrogation, proving facts etc I would just move on! OK so people may say, the physio acted unprofessionally but we don't actually know ALL the details and unless the OP feels she is absolutely sure and wants to drag something on for years which could be nipped in bed right now I would advise her to drop it!
Eventually IF this physio is acting unlawfully she will be brought to task, no doubt about it but not sure on the basis of what has been shared I would want to be the instigator. Up to OP, of course.
Glad you got your husband to stop seeing her Introvert55