Twilight Children - Coming From Darkness, #4

You've heard of Happily Ever After, but have you heard of the unhappy fairies that came first?A pair of little girls, alone in the wilderness. Two young fairy women, in a contest for power. A troubled fairy city. Meihui wants to be the next Grandmother, and leader, of the fairy city. But her fellow fairies hate her. And everyone loves her rival, Marah. Two mischievous lost souls enter the city. Meihui and Marah must each mentor one in the ways of the fairies.
The best mentor wins Grandmother's crown - and great fairy power. But Marah is not playing fair. The lost souls aren't up to the task. And a dark force tilts the playing field for its own gain.