A Harrison County woman hurt in a crash southwest of Denison earlier this week has died from her injuries. 32-year-old Tricia Littleton of Dunlap died Thursday at University of Nebraska Medical Center in Omaha. The accident happened Tuesday, when the car Littleton was driving hit the rear end of a semi driven by a 51-year-old Missouri Valley man. The truck had slowed to make a right turn off Highway 30. The accident remains under investigation by the Iowa Highway Patrol.