The Unseen Enemy

On the day Lilith turned 16 she was dragged from her dorm room and taken to the hospital for her pretty surgery. But things were not at the authorities said. Being a pretty meant having your humanity taken out and "something else" put in. So in a frantic effort to keep her humanity she jumps out of a second story window and starts to run. But when that fails she wakes up in a strange room with a man in a long brown trench coat and crazy hair. Is he behind the invasion? Or is he her last chance at saving humanity? (uglies/doctor who/the host crossover)