The Chosen One
Carol Lynch Wiliams2009

Thirteen-year-old Kyra has grown up in her isolated community without ever questioning the fact that her father has three wives and she has twenty brothers and sisters; without ever questioning the strict rules imposed by 'the Prophet who leads them.
But now Kyra has started keeping secrets. She reads books that are forbidden and sneaks away to meet Joshua, the boy she hopes to choose for herself, instead of having a husband chosen for her.
Kyra knows that it's only a matter of time before her two secret loves are discovered. And when the Prophet decrees that she is to become the seventh wife of her sixty-year-old uncle, Kyra is forced to make a desperate choice. But saving herself means endangering everyone she's ever cared for. How far should she go for freedom?