Unless the kinksters at the dungeon she attends are engaged in extremely risky forms of edge play—breath control, asphyxiation, fire play, gun play—her life is not in danger. (Suicide-by-cop is a thing, suicide-by-tit-clamp is not. So here’s hoping she’s bullshitting you.) But if she somehow managed to find the one public dungeon on earth where tops rely on bottoms to use their safe words to prevent their own deaths during edge play: What your client is doing is unethical and unfair. A top’s consent matters in a BDSM scene, too—and the people she’s playing with consented to top her, not off her. Tell her to knock it off.