Dangerous by Millie Criswell
Texas Ranger Ethan Bodine and horticulturist Wilhemina Granville are both after Rafe Bodine, a man with a considerable bounty on his head. Ethan is on Rafe's trail because he's his brother, and Wilhemina is in pursuit to get the bounty money to save her family home. But as Ethan and Wilhemina search for the fugitive, they find they have far more in common than they first thought--and that love can blossom in the most dangerous of circumstances.