I know she wasnt judging YOU. But i dont think a t should be declaring that she thinks something is beautiful OR ugly. A therapy session is your space for your feelings and opinions, not the t's. It should be a judgment-free zone, period. Very unprofessional of her.

My ts might maybe make a judgy joke, but this was nowhere in the vicinity of a joke.

Again, very sorry she said this, and she owes you an apology - not so much for calling something gross, but for being unprofessional. As you say, her feelings taking over for the moment.