It happened just before 3 p.m. about ten miles north of Throckmorton County on U.S. Highway 183.
28-year-old Ashley Randall was heading north when she drove off the road and flipped her car, according to DPS officials.
Randall was thrown from the vehicle was taken to Throckmorton Memorial Hospital where she was pronounced dead soon after.
Troopers are still investigating what cause the crash. Randall was not wearing a seat belt, DPS officials said.