A rancher's daughter (Alison Lohman) falls for a wild mustang in this update of the 1941 novel by Mary O'Hara. Lohman is appropriately tousled as the rebellious teen, who identifies with the horse she's struggling to tame, but her performance is alternately shrill and pouty. Country music star Tim McGraw had a meatier role in Friday Night Lights; he gets more screen time here playing the stern, rugged father, but he's saddled late in the film with a hokey speech that would challenge anyone's acting skills. The oedipal undercurrent relegates Maria Bello to the sidelines as the girl's mom, another miscalculation by sophomore director Michael Mayer (A Home at the End of the World). PG, 94 min.