She had just turned four years old.
From an article:
A 58-year-old woman who lives at the home said Trinity is her husband’s daughter. The girl had just gotten out of the Freda Markley Early Childhood Center at 11:30 a.m. The woman was watching the three kids. She left them in the living room while she went outside to get something from her car, police said. She heard a gunshot, ran back inside and found Trinity wounded.
The woman put the gun on the TV and called police. She pressed a cloth to Trinity’s forehead to try to stop the bleeding while waiting for an ambulance.
Police determined that the older boy apparently found the five-shot revolver under a jacket on a chair and fired it. The woman told police she didn’t know the gun was there. She said the gun belonged to a relative of the boys.
A related news video.
Every gun in the hands of a child must first pass through the hands of an adult.