Hello Freewilled-
People have suggested some good possibilities about your dream. What came to my mind was one of a few ideas. One, was there something that happened in the therapy that felt intrusive or dismissive or in some way felt like it might be crossing a boundary even if it was on a smaller scale? It may have been something that transpired that wasn't necessarily glaring but that was filed away in your mind as bothersome. Another idea I had was that maybe the dream represents another situation or relationship where you felt a boundary was crossed or you felt dismissed or intruded upon. Maybe you had the feelings that you described in the dream but in another setting?