One in a Million (Watty Awards 2012!)

Willow is just a girl. She also has over 100 brothers and sisters. Once every 75 years, one girl and one boy are chosen to be the heirs of the throne. The throne of the whole world. But Willow doesn't know about any of the things her parents are doing to them. What she will have to do to her children. There is also this girl, Andrea. Who is she and what does she want from Willow?