I am not fully certain what you are asking. I don't talk to clients or students outside of school or court etc other than to say hello if they speak to me. My personal life is not what I share with them even if we appear at the same event. Nor do they usually really want me as me in their personal life. I am a role. The therapist is playing a role at appointments.
For me, if I even recognized the woman, I would ignore her. If shoved into close contact, I might say hi or excuse me or whatever like I would to any other stranger and then I would go on with whatever I was doing.
What else do you want from the therapist and why?