Abigail's Dream by Kay D. Rizzo

Single with no hope of a suitor and working as a nanny for her sister's children, Abigail unexpectedly receives the chance of a lifetime to travel across the country to the wild Northwest. On the trail she meets two men who vie for her heart-Hawk Lassiter, one of the guides, and Evan Chambers, who becomes a widowed father when his wife dies on the trail. After Abigail is kidnapped by Indians and rescued by both men, she must make two crucial decisions. Will she return to Massachusetts or stay and choose between the two men she loves?