She kept saying to me that I was "still attached " and it was from me showing emotion while unloading on her.
Well there you go, confirmation. That's actually a good thing, you know what you're up against.
She is better than me at showing emotion or lack thereof.
Because she has to be and has a lifetime of practice. Borderlines don't like themselves much, so being open and honest about what's really going on is not an option, plus attachments are everything to someone who thinks they wouldn't exist without one, so they get very, very good at presenting false selves and being who they need to be in any situation. You can't compete with that.
Good luck on the next encounter, and keep posting!