© ABC 7DeKayla Dansberry
The teenager appeared before a Juvenile Court judge Tuesday afternoon, CBS Chicago station WMMB reported. Prosecutors said the girl, who is not being named because she is a juvenile, left home with the knife Saturday and stabbed DeKayla Dansberry in the chest.
According to prosecutors, the suspect returned home and washed the knife in the sink and later told two witnesses, "I killed her, I killed her."
The girl's mother, Tamika Gayden, 35, was charged with first-degree murder and contributing to the delinquency to a minor, for allegedly providing the knife to her daughter.
Chicago Police and the Cook County medical examiner's office said DeKayla was stabbed in the upper chest after a fight broke out about 7:45 p.m. Saturday in the 6500 block of South King Drive in the Parkway Gardens neighborhood.
She was taken to Stroger Hospital, where she died at 8:24 p.m., authorities said.
DeKayla was a freshman at Johnson College Prep and was a sprinter on the track team, getting ready to run in the state finals.
"She was a good teammate. She was always happy. She kept a smile on my face. It's just heartbreaking. I don't believe it," teammate Tyanna Chatman told WBBM.
Friends said DeKayla was a jokester who loved to dance.
"I was real close to her. Just to know her for a few months, it felt like years," Faith Cathery said.
The stabbing occurred on what has come to be known as "O-Block," the site of a long-running war between two rival South Side gangs. Rev. Corey Brooks said the fight was between two groups of girls who knew each other. He said both Dekayla and the girl who allegedly stabbed her went to his church.
Brooks said Dekayla and the other girl were out with friends when the two groups crossed paths, and an earlier argument led to a fight that resulted in Dekayla's stabbing.
Community activist Andrew Holmes pleaded with other teenagers not only to stop the violence, but to stop posting fights on social media.
"From listening and looking, social media played a big part in this. It may have led up to this; and then ultimately to this young lady losing her life, but this didn't have to happen," Holmes said.
Photos and video of the fight later were posted on social media.
"For the ones who's sitting around, seeing all the fighting and videotaping it, instead of them stopping the fight, they're condoning it," said Faith Bradley, the mother of one of DeKayla's friends.
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