I think, really, if its as inappropriate as you say it is, you need to report her to the board, im sure theres SOME authority you can do this to, and you must show them this email as a basis for your complaint...
thats horrible, bc its wrong and unprofessional... she does deserve to answer for that ...
is she a psychologist? then look up psychologists in your state look for the board or authority in your state... get some advice for how to lodge a formal complaint.
When you're down to nothing, God is up to something.