'I Michael Myers'ed my sister': Police tell court what TikToker teen, 16, said after she was arrested for allegedly stabbing her 19-year-old disabled sister

• TikToker Claire Miller, 14, killed her sleeping wheelchair-bound sister Helen, 19
• When Claire heard a Halloween ringtone, she said: 'I Michael Myers'd my sister'
• Cops say Claire, now 16, was found bloody and barefoot in snow - and confessed
• She allegedly said: 'I'd have killed someone sooner if I knew I'd get McDonald's'
• WARNING: GRAPHIC CONTENT

A teenage TikToker accused of stabbing her sleeping sister to death joked to cops that she 'Michael Myers'ed' her, a court in Pennsylvania heard.

Claire Miller, 16, was 14 when wheelchair-bound Helen, 19, was murdered at their family home in Manheim Township, Lancaster County last February.

The high schooler was reportedly found by police standing in front of the house barefoot and covered in blood. 

She had dialed 911 and swiftly confessed to the killing, Manheim Township police said. 

Once arrested and taken to the police station, a ringtone with the theme from 1970s horror classic Halloween - in which the boy serial killer murders his sibling - prompted horror fan Claire to say: 'I Michael Myers'd my sister.'

Manheim Township detective John Martin also told the court that after Claire was brought a fast food breakfast, she replied: 'Ooooh, McDonald's. I'd have killed someone sooner if I knew I'd get McDonald's.'

The court heard that she texted her friends: 'I’m so sorry guys. I just killed my sister.' 

Helen, who had cerebral palsy, was knifed seven times including twice in the chest and jaw and three times in the neck, coroner Dr. Wayne Ross said.

Police said the murder weapon, a kitchen knife, was left in Helen's neck. 

Myers also used a kitchen knife to kill his victims in the 1978 John Carpenter film.

A court in Lancaster County is currently deciding whether Miller should be tried as a juvenile or an adult. 

Her parents have pleaded for her to be tried as a child.

Though the suspect was a minor, Pennsylvania law dictates that all murder trials start in adult courts - with the accused taken to adult prisons.

Her defense attorney must petition County Judge Workman to transfer the case to a juvenile court, where penalties are more focused on treatment than punishment.

Claire's lawyer, Robert Beyer, brought her parents to help make that case.

Mother Marie Miller told the court: 'We love both of them. I know Claire did not mean to do this.

'We lost Helen and we don't want to lose Claire too. 

'We don't want her to be punished, not get help and be put away for a long period for something that was out of her control. We can't lose her too.'

Beyer added: 'Make no mistake about it, Claire is mentally ill.

'She’s a willing participant in her treatment. She wants to get better.'

An official at Claire's school also testified in favour of the transfer.

Claire was first taken to Lancaster County Prison, where she became its first juvenile woman, before being transferred to Muncy State Prison in March 2021.

Two psychiatrists who analysed Claire said she suffered from auditory hallucinations - or hearing voices - that compelled her to cut her own throat on the night of the killing.

Claire tried to cut her own throat and then focused on knifing the hallucination - only stopping when she realised blood was pouring out of her sister, according to two psychiatrists who evaluated Claire.

Dr. Susan Rushing said that Claire was psychotic that night - and as she is still a child whose brain is not yet fully developed, that should be taken into account by the court.

Rushing claims that Claire was severely symptomatic in April 2021 - yet prison doctors say she acted completely normal, with no signs of psychiatric illness. 

Officers testified that shortly after Helen died, Claire cried every now and then but was not paranoid nor frantic.

An audio recording played to the court showed Claire saying 'No… No… No…' from inside a police car as an ambulance approached her family home.

Judge Workman is set to announce his decision at 1.30pm on July 18 at the Lancaster County Courthouse.