This one is a no brainer to me. I'd stop seeing her right away. Not only that. If I heard any bigoted slur directed at any group of people whether it's race, sexual orientation, gender, age or anything else related from a therapist, I'd tell them what I think of them right in their face and I'd also report them to the board. I have absolutely ZERO tolerance for any kind of bigotry. This behavior should not be tolerated anywhere by anyone, especially in helping professions. This also violates the professional code of ethics and should be reported to licensing agencies.