Be prepared to go public in tandem with filing suit, then. Can’t speak for wherever you might be located but here there is a network newscast that delights in reporting of abuses, putting them on the spot live and on camera. It’s one of the few legitimate acts of investigative journalism remaining that I’m aware, and a genuine public service.
Yes, that is an option and we are in stock country. But I have a feeling she might already be on the edge of being an uninsurable serious risk. They carry malpractice too.