Tribal Blood by Jenna Kernan

He will always fight to protect those who cannot protect themselves.

In the throes of labour, Kacey Doka escaped her captors and their underground surrogacy ring to find Colt Redhorse. Though he'd sought seclusion on the Apache reservation for months, Colt and Kacey share something that goes deeper than tribal blood. Colt's time as a marine left him with nightmares, but his training also gave him a certain set of skills. No one is taking this woman…or this child.