Into the Shadow Realm by Kristina Circelli
Approx. 86,420 words.
Published on October 18, 2013.
She destroyed the Raven-Eater and battled the Great Spirit; now Whisper must travel deep into the shadow world - and face her own potential self-sacrifice - to right the wrongs she has committed. In her absence, her enemies thrive - Sun Woman seeks revenge, Creator's servant seeks to destroy her heir, and an old enemy rises from the dead while luring Whisper closer to her own destruction.