PAWNEE, Okla. (AP) _ A woman spent more than two days trapped in her overturned car in a creekbed as snakes slithered into the vehicle before her brother retraced her route and found her in what state police call a ''one-in-a-thousand chance.''

Carolyn Sue Bowman, 45, was driving along a straight stretch of Oklahoma 18 Friday when the steering wheel malfunctioned and the car skidded into a ravine about four miles south of this north-central Oklahoma community, said Highway Patrol Trooper Roger Price.

The car ended up with its top mashed down and doors jammed shut in a marshy creekbed, where snakes infested the engine compartment.

''She said she kept trying to figure out a way to get out, and kept shoving things into holes so the snakes couldn't get into the car,'' said Mrs. Bowman's husband, Terry Bowman. ''She said she could hear one of the snakes near the fan.''

Sunday evening, her brother, Ripley Police Chief Bill Gladden, traced her route, finding what he described as ''some skid marks off the highway into the grass.'' Gladden investigated, and on the other side of a small hill found the car lying upside down in the ravine.

The brown car blended with the mud of the creekbed and was partially covered by a tree, said Gladden.

''You could have taken a helicopter over the place and not seen the car. The good Lord wanted her to be found,'' said Price, who investigated the accident. He called the rescue a ''one-in-a-thousand chance.''

Mrs. Bowman was being treated Monday at the Pawnee Municipal Hospital for bruises, exposure and dehydration, said her husband.