I've gone through this before -- I felt something was wrong with my T, he seemed wildly different during one session and it totally brought me down. I thought about stopping, was sure he didn't want to see me again, etc. etc. I somehow got up enough courage to ask him about it, and that session was a kind of breakthrough for us.

So do mention this to your T. But don't assume anything is wrong until you know more. My feeling from what you've said is that she's not pushing you away. If it would help to leave a message, maybe you should...