How someone else feels about her as a professor is not the same as how you feel about her as your therapist. Your coworker obviously does not like the woman but her nondescript, over-the-top, generic negatives and "knowledge" of what grades all the women/men got tell me more about your coworker than about the professor.

Just keep with your decision to ask about how the university news affects yours and her relationship and, you should be able to learn more that is germane to you. If she is so "completely crazy, totally nuts" and "hates women" you should be able to tell that; one can't hide that. If you feel she gets angry or defensive in her discussion of the subject then she may not be the therapist for you is all, the rest of her literal work problems are hers; being a college professor is worlds away from being a therapist; she could be good at one and not the other.