Morgan Geyser and Anissa Weier face attempted homicide charges as adults in connection with the attack Saturday. Prosecutors say they conspired for months to kill their friend to please a fictional character named Slenderman that they read about online.
In Wisconsin, anyone 10 or older charged with homicide is automatically considered an adult. Four states have the next youngest threshold for children to be automatically considered adults in homicides, at 13.
Geyser's attorney says she should be in juvenile court, which offers more social services and mental health treatment than the adult system.