Miles to Go by Amy Dawson Robertson

All Rennie Vogel wants is to serve her country.Rennie has devoted her life and body to training as an FBI counterterrorism operative. The brutal pace has slowly stripped away her private life until only the most fleeting contacts with other women are possible. When her ambition of being the first woman ever considered to join CT3 is finally realized, she pushes herself to the limit to earn the position.When one disaster after another befalls her, Rennie finds herself alone. Only then does she begin to unravel the misdirection and deceit that surrounds their first assignment, and to wonder if her failure, not her success, was part of the plan. Ultimately, with miles through an inhospitable landscape and an ambiguous enemy between her and safety, Rennie must decide if she can trust the one thing she never has before: another woman.======================