The Overlanders — Nelson Nye

Driven off his ranch by a horde of hard-riding renegades, Grete Farraday would stop at nothing to get revenge. But he'd need help. That was where Sary Hollis came in. For a share of his spread, she'd lend him the use of her guns and men, low-down sidewinders all. Farraday didn't cotton to being partners with a woman … but he'd join up with the devil himself if it would get his land back.