Investigators said Windham left an auction and followed a driver down Mississippi Highway 356. Later, Windam got out of her car carrying a weapon. When she got out of her car, the person she'd followed opened fire, killing her.
The shooter's identity has not been released because he is not facing charges.A witness, Sarah Huggins, said she found Windam in the ditch and immediately told her daughter to call 911.
Huggins described the scene as frightening.
"I was fearing for my life because the shooter was standing behind the door," Huggins said. "I didn't know if he had the gun and was fixing to shoot us or what."
Alcorn Sheriff Ben Caldwell said Windam and the shooter had collided before.
"This is an ongoing feud between these two families taking place over the last several years," Caldwell said.
Investigators said the shooter's actions were justified on the grounds of self-defense.