Cherry Creek by Linda Griffin

When her fiancé died, Eileen said, "Then I'm free," words that her younger sister Molly didn't understand and never forgot. In 1850s Ohio, a girl doesn't have that many options, and marrying Andrew MacLeith may be the best she can hope for.

He promises to cherish her, but they have to live with his parents, and he can't even protect her from his mother's sharp tongue. After a quarrel, Molly impulsively joins his gambler brother Hugh on a journey to the Pike's Peak gold region.

Perhaps the romance and freedom she longs for lie elsewhere. Or were they right under her nose all along?