Dust and Ashes by Lisa Phillips

Kenna needs a way out.
Captive south of the border with Jax the subject of intense interrogation, there’s no way she’ll risk escape without setting them both free. When their captors put her in the middle of a dangerous turf war, Kenna wants nothing to do with negotiating a truce…

Or being left behind.
Kenna is dragged along for the ride, partnered with a suspicious former colleague, and tasked with a dangerous assignment whether she likes it or not. With rescue just out of reach, Kenna is pushed to the breaking point: keep fighting, or finally surrender.

Her brand of justice is the only way to save her family.
All the thrills – no cliffhanger (promise).