Blue Heart by L Carmine

Sian is running against time. She has to save her brother's life and in order to do that, she has to fight against winter, cold and the many deadly creatures that Blaewen Forest keeps hidden in its ancient grounds. Rules will be broken and promises that can seal her fate forever will have to be made. What happens when Sian steps into the blue heart of Blaewen? Will she be willing to pay the price? Will she be brave enough to die for the one she loves?