Rae shrugged. "I get weak. My immune system bottoms out. When I was really little, we lived for a year in this tiny underground apartment, and I spent pretty much the whole time crying and getting sick. Took my mom a while, watching me follow the little patch of sun that came in through the one window, to figure out what was wrong. Sunlight is my element - I'd probably be dead if I'd been this long without it."

She listened to his explanation thoughtfully. "Sounds like a good way to handle things. Families are more...fluid where I come from, which has its difficult points as well as the positive."