I don't think doctors have quite the same line as therapists but this was not a nice way for a friend to treat someone, never mind a doctor. I winced thinking about the break in the friendship, alone.

It sounds like you can see in a healthy manner that she obviously is the one with the problem; I would not think of yourself as stupid -- you had no way to anticipate this. You do know now if she "comes back" you do not wish to trust her! I'm so sorry for your hurt and need to go through the rigmarole of find another doctor.