One girl told the other to 'go ballistic, go crazy,' according to the complaint.
One of the girl's attorneys, Donna Kuchler, asked Pieper to remove reporters from the courtroom because she planned to attempt to get her client waived into juvenile court. Kuchler escorted the girl's family out of the courtroom, telling reporters only that the family was horrified at what happened.
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Survivor: The 12-year-old girl was brutally stabbed 19 times by the two other girls who lured her into the woods.
Pictured above being transported to the hospital where she was last reported in stable condition They decided to put it off, but the next day, during a hide-and-seek game in a wooded park, they attacked their friend with a knife.
The girls invited their friend to a slumber party on Friday evening, the complaint said.
They planned to kill her during the night so they wouldn't have to look into her eyes, one girl told police, and then run away.
Family members of one of the girls wept openly as reporters snapped photographs. According to the criminal complaint, one of the girls told an investigator they began planning to kill their friend in December.