This post screams about how you relate to others. She may be intimidated by your vocabulary but that's her to figure out what she wants to do about it. You are probably using your vocabulary an an unknown defence. A lot of therapist seem unsure at first, its not that they are unsure of themselves but they're trying to gauge how far they can push, what your trigger (either you known or unknown are) and the best approach for you.

You don't trust her yet and you worry its to casual for you. You can tell her this. You essentially have known her for less than a day. You went to her for her professional opinion trust yourself that you made the right decision. Sharing your paper was a wonderful idea especially because it was so healling.