Brave Horizons by Danielle Stewart

Topeka’s life has turned into a relentless nightmare. As the daughter of the notorious head of the Texas Rangers, she once lived a life of comfort and privilege. But when she discovers the dark truth about her father’s rise to power—built on a foundation of corruption, threats, and murder—her world crumbles. Now, she’s on the run, fleeing from a man who won’t hesitate to make her his next victim.
Alex has always made himself a safe stop over for anyone the Kinross Organization needs to send his way. But Topeka’s brief layover with him turns into a much longer journey as danger pops up around every corner.

When she feels alone, Alex makes it his mission to stick this out. When the mission goes dark and they are on their own, will they come together or will the pressure break them apart?