[1] It emerged that the teenager had been suffering from psychosis at the time of the attack, caused by an unknown psychiatric disorder and she was subsequently sentenced to a minimum of five years' detention on 24 November 2017.
Fifteen minutes later, at 4:35 p.m., the elder girl placed a 999 call and confessed to having killed Rough, though claimed not to remember any specific details of the event.
Subsequent investigations found that she suffered auditory hallucinations and delusions and often experienced violent fantasies, which she acted out by mutilating and defacing soft toys at her home.
[9] Rough's killer entered a plea of "not guilty" to the charge of murder in the initial hearing at Leeds Crown Court on 16 February 2017.
Despite evidence indicating that the killing had been a premeditated act, the Crown Prosecution Service ultimately concurred that it was the result of the perpetrator's mental disorders, and offered her the opportunity to plead guilty to manslaughter on the grounds of diminished responsibility.