I think you should share your concerns with your T. Tell her what she said made you upset. Validate what you're feeling be being fully open with her.

But, at the same time, I think you need to decide what you really want to get out of therapy. If you want someone to just vent to or "shoot the shit" with, then that's okay, but just understand that it won't really do much for the PTSD. If your goal is to deal with underlying trauma, then it seems like this T is a good match (at least for now).