Most likely ignore but it depends on a few factors. First, it would depend who is around. If I'm with someone who doesn't know I'm in therapy or who I don't want knowing the details of my therapy I certainly wouldn't want my t acknowledging me. If I'm in a certain mood I wouldn't want to see her either. For example, if I'm feeling great I may not want to see her because I wouldn't want to be reminded of whatever problem I was talking to her about. On the other hand, if for whatever reason I was visibly upset and t came to comfort me I would be touched.