The Scout and the Soundrel — Barbara Ann Wright

Zara del Amanecer's purpose in life is to do her duty, whether as a noble or a scout. She never shirks her responsibilities, especially with missions as simple as this one: to reconnoiter the border with the Firellian Empire and report anything suspicious. Easily done, even with a new recruit conscripted from prison. Never mind that Veronique the thief ignites unfamiliar feelings in Zara, from furious loathing to overwhelming desire.Roni can't stop imagining how passionate Zara would be if she thought less about duty, or even if she cared more about survival. Because the Firellians have a new magical weapon no one suspected, and they're not about to let anyone who's seen it get out alive. In the sights of an empire planning invasion, Zara and Roni's principles might not be the only things sacrificed.Book 2 in the Sisters of Sarras Trilogy