A Defiant Man by Leigh Greenwood
With nothing to her name but a herd of cattle, Iris Richmond is determined to get her livestock to Wyoming. Once she's away from the rustlers and gossipy neighbours who think they can run her out of town, she can make a plan to save her ranch. All she needs is a little help, and since she's been pestering the Randolph brothers since she was a little girl, Monty Randolph is the perfect man for the job. Monty has always bristled under his eldest brother's tight rein, but getting out of Texas has more to do with the spirited young girl who's grown into the most beautiful woman Monty has ever seen. He has no intention of taking her to Wyoming, but Iris has never taken no for an answer — especially not from the ornery cowboy she'd always desired.