Richmond County sheriff’s Sgt. Dan Carrier said the child was in her home in the 2400 block of Madrid Drive that night when a bullet came through the wall and hit her near the ankle.
Deputies had come to the area earlier in the evening after someone reported a fight, but the crowd had dispersed when police arrived.
When authorities were called out the second time, shortly before 8 p.m., they found that the child had been shot.
The girl, who was not identified, is expected to make a full recovery, police said.