The Other Woman (1995)

After the divorce from Michael Tessa raises her daughters Kate and Lara alone None of them can stand Michaels new young wife Carolyn a model But when Tessa learns that shes suffering from cancer and soon will die she tries to get her kids to accept Carolyn as new mother She takes them on a trip across the country to her father Jacobs ranch in Wyoming During this trip Tessa tries to teach Carolyn about the responsibilities involved in raising kids