A seven-year old child is dead following a one-vehicle crash on Highway 25 south of Scotland on Friday. Kirstan Roubideaux was a passenger in a car driven by 28-year old Stephanie Kae Hamilton of Yankton. The vehicle left the roadway to the right, hit a field approach, and rolled. Kirstan Roubideaux and five-year old Colton Roubideaux were not wearing seat belts and were thrown from the vehicle. Kirstan died at the scene. Colton is hospitalized with life-threatening injuries. The South Dakota Highway Patrol is investigating with assistance from the Bon Homme County Sheriff’s Office, Bon Homme County Fire Department, and Scotland Police Department.