DPS spokesman Tony Fulton says Stephanie Shurtz was traveling northbound on US 281 about one-and-a-half miles north of Scotland around 8:40 this morning.
He says Shurtz' 2010 Nissan Sentra ran off the road, then Shurtz over-corrected.
The car ran off the road again, rolled, and Shurtz was ejected.
Fulton says the car continued rolling and rolled onto the woman.
He says Shurtz was not wearing a seat belt at the time of the accident.