It Wakes in Me (In Me Series)

According to the tradition of the Black Falcon People, each person has three souls: the eye soul, which stays with the body forever; the shadow soul, where all evil is leeched and shed at death; and the reflection soul, where the spirit lives on among the Blessed ancestors in the Land of the Dead, pure and clean. On rare occasions, a shadow soul can take over a stranger's body and commit hideous crimes.
Sora, the High Chieftess of the Black Falcon Nation, has been plagued with blackouts and fits since her seventh winter. As her world goes black, two gleaming eyes burn inside her. Sora calls these occurrences the Midnight Fox; she remembers nothing of what happens when they take her. Now rival clans have accused her of seven murders, including the killing of her friend, the Loon People's war chief. As animosity toward Sora and the Black Falcon Nation abounds, she must find the necessary healing for her soul and mind, the courage to lead her people, and the strength to save her own life.