The Oten's Eye — A.L. Peevey

The orphan, Timur, likes Daisy, who grows roses with the power to heal. Her grandmother, Judit, is a witch, who lies in bed in an endless sleep and is missing pieces of her heart, stolen by the sorceress, Magji. Now, Magji has returned to steal the rest of Judit's heart. Can Daisy, Timur, and a werewolf with an odd secret stop Magji and awaken Daisy's grandmother again? If you love adventures involving magic spells, werewolves, witches, ordinary heroes, scary castles, and flights above snowy woods carried by a giant raven made of iron, you'll love The Oten's Eye "