Love Comes Softly (2003)

Aaron Claridge dies while leading his pregnant wife Marty, an East coast teacher, on the wagon trail to the West. Destitute and unprotected, she accepts a marriage of convenience with widower Clark Davis to help raise his brat daughter Missie all winter, in spring he's prepared to pay for her return. Missie is hostile to 'mother substitute', but as the months pass Clark achieves a rapprochement.