The Delaware Supreme Court on Thursday overturned a Family Court verdict that found a high school girl culpable of criminally negligent homicide in a beating that left her 16-year-old classmate dead.

All five justices ruled that Trinity Carr could not be blamed for the death of Amy Inita Joyner-Francis, who went into cardiac arrest and died of a rare and undiagnosed heart condition shortly after the attack in a Howard High School of Technology bathroom.