The family left for Colorado in 1864, traveling for almost four months with other families. They tried to steal their horses. During the westward journey, she learned to "hide her fears and persevere". Author Barbara Fleming describes the things that Milner would have learned to survive as she crossed the prairies with her family and what she would have needed to do every day to survive. The next year, she taught at a one-room log schoolhouse along the
Big Thompson River, Milner Smith earned money to pay for books and other items by charging for admission to spelling bees and debates. She also held entertainment events to Old St. Louis in what is now Loveland. The cabin was moved to land along the Big Thompson River owned by Nelse Hollowell. Bands of Native Americans stopped by the schoolhouse on their way southeast to their hunting grounds for buffalo. By 1870, the family established a farm in Big Thompson,
Larimer County when it was
Colorado Territory. Milner Mountain and Milner Glade are named after this family. ==Marriage and children==