That's a tough one. I generally believe in following your gut. If your overall impression was that she was impatient, then she might have been. If she isn't usually like that, then I'd guess she had something personal going on which had nothing to do with you.

There is a caveat though. I've noticed with myself that I occasionally sense rejection in people when they aren't actually feeling that way. That's a symptom of my own history. I tend to be accurate if I sense someone is sad, mad, etc, but if I feel like I'm sensing that they dislike me or are going to leave me, there is a chance I'm just projecting my fears onto them.

I'd talk to your T about it. She might just offer up the reason and that would be reassuring. She might deny or lie about it. She might point out that she always does that and question if you're projecting something. I'd just go in open and curious and see what happens!