GWINNETT COUNTY, Ga. — A family member of Sheffield hadn't heard from her in about 24 hours, so came to the home to check on her.
When they went inside the home, around 10:45 Friday morning, that's when they found the body of Sheffield covered in blood.
Police say she was stabbed to death by the teen.
"During the course of the investigation our detectives have been able to interview family members, neighbors here in the community and go inside and take a preliminary view of what's going on inside this residence," Michelle Pihera with Gwinnett County Police said.