 It is not certain whether Chase's mother was born before Mystique and Destiny became lovers or whether, like Mystique, Destiny had a child during the course of their relationship.Years after her death it was revealed that when Destiny's mutant power first manifested she filled several diaries called "The Books of Truth" with prophecies of the future that, when in the wrong hands, posed the greatest threat to humanity ever known.Guarded by Destiny's companion Mystique for years, some of the volumes later came into the possession of Professor Charles Xavier.