These moments of seeing the 'real' person under the professional guise can be disillusioning but it sounds like you have a handle on it. I think, once you get past the moment, it's good to accept that our Ts can still do good work even though they may not be at all like us.

On the other hand, it does sound like your T was being pretty judgement about something related to class and it touched something in you about how they might perceive your own story?

Perhaps it worth discussing that with her?