Hmm, I guess that is a unusual reaction... I'd actually respond awful to that reaction because it's such a cliche response and something I'd expect from someone untrained. Both my T and Pdoc, responded with worry and curious on the details of the thoughts, when they came the most, impulsiveness, and so on. Maybe she doesn't have the proper training? It caught her by surprise, and her response seemed the safest instead trying to wing it?
Maybe see if she brings it up in the next session, or if mention if you're still in the headspace if her demeanor is any different due to speaking with a supervisor or something.