The Realms of the Gods - Tamora Pierce

Daine controls the fate of Tortall in this thrilling conclusion to the Immortals series, featuring an updated cover for longtime fans and fresh converts alike, and including an all-new afterword from Tamora Pierce.
During a dire battle against the fearsome Skinners, Daine and her mage teacher, Numair, are swept into the Divine Realms. Although they are happy to be alive, they are not where they want to be. They are desperately needed back home where their old enemy, Ozorne, and his army of strange creatures are waging war against Tortall.
While trapped in the perilous realms of the gods, Daine discovers her mysterious parentage. But as the secrets of her past are revealed, so is the treacherous way back to Tortall. And so Daine and Numair embark on an extraordinary journey home, where the fate of all Tortall rests with Daine and her wild magic.