The Oblivion Stone — Alexandra Moody

Betrayed by her brother, separated from her sister and on the run from her vicious father, Sloane has been forced back into the frozen world of Ellysia. But she has bigger problems to deal with. A bloody battle between the humans and the Unfaih looms on the horizon, and Sloane and Rhyn must take drastic measures to stop the violence that threatens to destroy everyone they love. Can they find the solution in time, or will Aeris and Ellysia descend into war?