The accident happened at about 5:30 p.m. Sunday in the 2400 block of North Mountain View Avenue. A truck was driving northbound and fled from the scene before officers arrived, family members and police said.
Asianae Thomas was listed in grave condition at a hospital. The family was celebrating a birthday, cousin Felecia Jones-Windham said.
Anyone with information is asked to call Detective Peck at (909) 384-5664.