Fireborn. Twelve and the Frozen Forest

Set in the snowy northern forests of a prehistoric world, Fireborn is the middle-grade debut of the decade. By turns exciting, funny and heart wrenchingly sad, it marks the introduction of an unstoppable new voice in children's storytelling.
A fierce heroine rises
Twelve has spoken the Pledge and now she is a Huntling. She has given up her name to train in the art of fighting monsters, and she won't choose a new one until she has earned it. But when her friend is taken, Twelve sets off on a dangerous journey to rescue her. Teaming up with Dog, the stone Guardian of the Hunting Lodge, Twelve ends up on an epic adventure that will change her life, her name - and her entire world.