From what you say, she does sound like, as you suspected, that she has seen you as a difficult patient, and she knows she can't work with you. (Do you possibly have borderline personality disorder? We tend to be very demanding.)

I suggest taking it as a blessing that the insurance issue came up. You need a therapist who can set boundaries when she needs to and not get mad about things. I think you need to talk to your new therapist at first about your problems with the former one. Don't hold on to the former one. Therapy needs to be a good match.