Everything you need to understand or teach Poison (novel) by Chris Wooding.
"Poison" is the name of a sixteen year old girl living in a small village in the Black Marshes. When her baby sister Azalea is stolen by phaeries, she goes out into the world to look for her. Helped by a wraith-catcher called Bram, she finds the passing-place to the Realm of Phaerie. She faces the terrifying Bone Witch and helps a girl called Peppercorn escape from the house. All three...