It seems really strange that a therapist would comment on your body at all. It doesn't sound like she is helping, just making this worse. She should be focusing on behaviours and feelings, not appearances.

Her comments are very damaging, she's saying things that abusive/neglectful parents would say to their child to try and make them lose/gain weight. It never works and just makes eating issues worse (if there are any). To change eating or weight issues, there should be very little focus on food and appearance.