"I'm not sure how to answer that," Fiona answers slowly. "I'm not sure what is my natural personality, and what is a result of existing the way I do." She shrugs. "I don't really know how this works. I 'woke up,' so to speak, one day, and all I knew was that I needed a body. The rest was mostly instinct." She stops to think, then shrugs again. "Since then I haven't had a problem remembering anything. I, myself, whoever it is that I am, have only really died once. When my host dies, you'd see, if you could, two spirits leaving. First mine. Then hers." She taps her chest. "I leave in that split second before the heart stops beating. I think that's the key to it."