Each day I work with her on the memory exercises that her doctors and therapists recommend. They caution me not to expect much. For a long time, I thought about recorded cues and guidance offered up to the unconscious mind during sleep. The research is undeniably promising. I had my reservations, of course, but the thought of being able to reach someone who is lost and guide them back toward you—to restore them to how they once were and how you wish them to be again—is a powerful one.