I'm so sorry - that's horrible, IMO. I used to wear my work clothing to T but over the past several months, I've taken to changing into comfortable clothing before going to T. I just need to feel comfortable as it's exhausting for me. If my T made a comment/argument like that, I'd be hurt. Now if he said something like "Is everything ok? I'm concerned about you because it seems like your appearance has changed and I know you've been depressed" - maybe.....but even that is clumsy.
I hate to say it, but my suspicion is that some professionals have either 1) not done their own work and therefore are hiding their own dysfunctions or 2) have never had any deeper problems in life than trying to decide what color lipstick to wear to work that day.
Probably #1. They say a T cannot take you any further than the point they have gone in their own personal therapy/work....but idk.
I would not go back to her. Ever. And that's coming for someone who pretty much always has a try-again-and-see-if-you-can-work-it-out mentality.