An Unexpected Bounty Of Love by Daphne Barnes

Willa has spent her entire life trying to prove that she’s as good a bounty hunter as any man – but when she’s about to capture the most notorious criminal of her career, she might just have to give it up for love.
Theo and his brother grew up as the best of friends, but their falling out has left him with no close relatives. When he falls in love with his rival, he comes to realize that family doesn’t have to be related by blood.
It’s tough to be a bounty hunter when you’re a woman – no one takes you seriously. Despite her clear disadvantage, Willa is fast and cunning and always gets her man. But Wild Buck is giving her some trouble, and she realizes she might need to get some outside assistance.
After a betrayal years ago, Theo has a hard time trusting anyone. He’s satisfied with his solitary existence tracking down criminals – but he needs this bounty for more than just the paycheck. And he’s hoping Willa can help him get it.
Spending close nights together on the road as they track the outlaw’s movements across the frontier, the pair start relying on each other more than either one anticipated. And when Theo faces yet another betrayal, Willa needs to decide what’s more important – her pride or her heart.