"The two people she suggested were totally inappropriate (one is junior to her, not tenured, and she sleeps with the other one)."

Just...wow.

Also, I agree with NP's advice. Maybe focus more on the job search in the hopes that you could move someplace else in the fall Or summer? Not sure how it works in academia. (This is what I did when I had a bad boss and toxic work environment at a newspaper years ago--focused on an exit plan.) And then, if you have an offer in hand, resign, if nothing gets resolved. Or decide to at least wait to act until the committee finishes its investigation in March.