Lacey by Norah Hess

Stranded on the Western frontier, Lacey Stewart is rescued by Trey Saunders, who offers to marry her, but shortly after their marriage, Trey is off on a cattle drive and in another woman's bed, and Lacey refuses to become a pawn in Trey's vengeful game.

 Shocked to discover that the dashing groom wanted her to be a pawn in a vicious game of revenge, the young firebrand refused to obey her vows. Only when Trey proved that he loved, honored, and cherished his blushing bride would Lacey forsake all others and unite with him in wedded bliss.