The Hunter's Daughter: A C-Shapes Novel (Unabridged‪)‬

Seven years after a virus has left half of the population of the world mentally unstable, a 16-year-old girl named Chloe must decide between a life of simplicity, the enjoyment of nature instilled upon her by her deceased mother, or the life her father has laid out for her as a Hunter - a person who kills Unstables when they turn aggressive.