A Claim of Her Own by Stephanie Grace Whitson

Determined to put the unspeakable circumstances of her past behind her, twenty-year-old Mattie O'Keefe travels to Deadwood, South Dakota, in search of her brother, whose letters boast of making a fortune in the gold fields.

Once in Deadwood, Mattie is soon convinced that gold mining will be the key to her future happiness. When a handsome street preacher speaks out against storing up treasures on earth, Mattie turns a deaf ear... until circumstances force her to decide for herself where true riches lie--and what's worth dying for.