I think if it were me I would confront her about it before I moved on. I am one of those "highly sensitive" people who is always reading into things, and so like you I would worry that my analysis of her body language was distorted. Another thing to consider is that maybe her frustration has less to do with you personally, and more to do with her being tired or having a bad day in general.

But I think you should definitely talk to her about it because even if it's not about you personally, that does sound rude on her part. Perhaps she doesn't even realize she's doing it, and if all her clients see her acting like this and feel the same way, I would think she would want to know and try to make an effort to seem more attentive.

Could you say something like, "I see you yawning and face-palming when I am not looking, and that hurts me. It makes me think you aren't interested in what I'm saying and that you've given up on helping me."

I think if she reacts badly to that, then maybe it is time to move on to a new T.