Brandy Hart, 17, had exited the bus and was crossing the road when she was hit by a vehicle driven by McManners, Wright said. The school bus was stopped with its red lights activated at the time of the incident, he said.
Investigators told Channel 2 Action News that witnesses tried to help Hart. They questioned the witnesses and McManners, who stopped at the scene, the report said.
Brandy was transported to WellStar Douglas General Hospital, where she was pronounced dead.
Douglas County Sheriff Phil Miller told Channel 2 the student was returning home from an after-school event when she was killed.
McManners was in the Douglas County jail Wednesday night and is scheduled to make her first court appearance Thursday, Channel 2 reported.
Brandy's mother, Mary Carolyn Hart-Springer, told the station that her faith gives her strength not to hold a grudge against the driver.
"I can say in my heart that I don't have anything against the driver that killed my child," she said.
Now Hart-Springer is making plans to bury one of her daughters. Brandy has two older sisters and two younger brothers, the report said.
"She was loved. She was very loved," Brandy's mother said.
Brandy's funeral will be Saturday at the First Baptist Church in Carrollton, Channel 2 said.