According to Lady Vrin, Loremistress Milvistle was a Geisterdame who doubted the divinity of the Goddess. Milvistle was apparently responsible for sabotaging the gateway to the Geister's home and destroying most of The Other's plans. Vrin also believed that Milvistle had help. As she has only been mentioned twice so far (neither time in great detail), little is known about her apparently pivotal role in her betrayal of the Other or who her allies might have been, aside from other Geisterdamen who lost faith.