My T texted and said that she double booked our session for tomorrow and could I change to 2 o'clock?

Yes, I can change. But no, I haven't told her yet. I feel miffed. Like not good enough. Like oh, I'll just switch Kit, she doesn't matter. Of course, it's possible the other person was booked at that time first. So of course, they should get to keep it. But I still feel undeniably and absurdly annoyed.