Dark Realm: Book 5 Circles of Light series
by E. M. Sinclair
When Tika vanishes, Farn collapses and is close to insanity. The First Daughter of the Dark Realm risks herself to retrieve Farn's mind, knowing that the young Dragon must be reunited with Tika. She believes that Tika is the only one who will be able to defeat the Crazed One.