Robin Watt 
Moon of the Hawk [EPUB ebook] 

Ruby Harrison moves to Arizona to finish college after a divorce that left her heartbroken. Like the men in her family, Ruby pursues a career in Law Enforcement, becoming a police officer with the Phoenix PD. She finds her Grandfather living on the Hopi Reservation and falls in love with the canyons, the culture and learning how to ride and care for the sheep. When her best friend Edy meets a ranch hand and quickly marries him, Ruby’s intuition tells her that Edy is in danger. After Edy’s murder, Ruby is shocked to be charged with her murder, but promises to hunt down the suspect and avenge her death.