Devil in Spurs (Love Spell historical romance)

Raised in a bawdy house, Jonty Rand has posed as a boy all her life to escape notice of the rowdy cowboys who frequent the place. When her granny's dying wish makes womanizer Cord McBain her guardian, Jonty finds herself in the hands of the man who promises to change her from a "sissy" into a rawhide-tough wrangler. Until the stormy night Cord discovers that Jonty would never be a man--only the wildest woman he'd ever taken in his arms.