The Return — Emily L. Goodman

Darkmagic is rising higher than ever before in Luria. Annie was sure that Cyan's death would put a stop to it, but the darkness hasn't dimmed in the slightest. In spite of the fact that she's only just returned home, she and Draken are called out again--and this time, they will face a greater threat than ever before. With a six-year-old vision to guide them, Annie and Draken will set out on a mission that will end in what they're warned is the most difficult battle any Cavemage will ever face. This time, it's not Annie herself who is in danger, but all the people she loves most--and she is the only one who can make enough of a difference to keep Luria from going down with them.