I think it is definitely possible she intended it as a harmless joke because those are jokes I can picture myself making to a friend, but I do think that it is very reasonable to question if she should have been so casual in joking around about a topic that you were struggling with. Was the joking around really helpful to you in reaching the goals you came to therapy to achieve? I'm guessing no. That should be the point of how a therapist interacts with you - not to fulfill their own needs, not to amuse themselves, and not merely to be your friend, but to help you make progress on the problems you came there for. It sounds like your therapist probably should have kept more firm and clear boundaries with you to avoid this sort of confusion and distress.