Aqua - Nona Schrader

Aqua, the novel: saving pure water with a bird, a Greek goddess, and a pair of winged horses.

College student Diana Carter returns to the family ranch after her first year of school, anticipating a summer pack trip into the Wind River Mountains with her father and Willy, their Eastern Shoshone and Crow family friend and ranch hand. Her plans are upended when her grandmother breaks her hip, and her dad leaves to work in the oil fields of North Dakota.

Diana learns she is destined to save pure water on our planet. The necklace Willy gives Diana, telling her the elk is her animal, protects her as she joins the Greek goddess Persephone and a little Mountain Bluebird named Indigo on a quest to save clean water.