Sacrifice (Honor the Gods, Book 1)

Long ago, her ancestors shut themselves away from the world and stayed fully committed to worshipping, honoring, and serving Asieth, the god of sacrifice.
To this day, Carmelle Rojas is trapped inside Northon, the town of her ancestors, that is surrounded by an impenetrable fence to keep them from escaping.
Once a year on the dreaded and feared Moriah-Asieth Day, the Chieftain draws out three of the citizen's names....and they are the chosen three who are forced to drown in the River as a human sacrifice to Asieth.
When Carmelle discovers the Chieftain's evil intentions, she knows she must do everything within her power to save all that she held dear. She and the Chieftain's son, Tate, of all people, quickly form an unlikely alliance. With Tate's help, together they must do the one thing that could either save them all or lead to their ultimate destruction.