A teenage girl accused of killing an Indian student she met on a dating app reportedly believed she was a werewolf and was a 'danger to society' according to her full-time carers.

Jamie Lee Dolheguy, 18, is charged with the murder of Maulin Rathod, 25, on July 23 at her Ross Court home in Sunbury, 42km north-west of Melbourne.

Dolheguy appeared in Melbourne Magistrates Court on Monday facing four charges including murder, the Herald Sun reported. She will appear before court again on November 19.

Dolheguy, who lived with acute psychiatric illness and reportedly believed she was a werewolf, required two full-time carers to protect her from herself.

Jamie Lee Dolheguy (pictured) accused of assaulting a man she met through an online dating app

'Everyone is scared of her,' one carer told the Sydney Morning Herald.

Dolheguy shared intimate details of her struggles with mental health on her public facebook page in lead up to the alleged murder.

'If only they believed me when I said I'm not sane,' she said.

'I live in fear, afraid of what's behind the corner, my heart is black. I no longer feel the emotions of happiness unless I see someone else suffer.'

She has also been charged with attempted murder, intentionally causing serious injury and recklessly causing serious injury after her arrest.

Ms Dolheguy (pictured) was charged with the murder of Maulin Rathod, 25

Mr Rathod (pictured) was studying a Masters of Accounting and had been in Australia for four years

Dolheguy said she believed a demon was living inside of her.

'Demons are real and ghosts are too, they live inside us and sometimes they win,' she said.

'Sometimes when no one is looking, my demon comes out to play. I try and fight her but she just gets stronger.'

Dolheguy's full-time carer, who wished to remain anonymous, described the 18-year-old as 'extremely disturbed'.

She also said Dolheguy probably had a number of personalities over the years.

Jamie Lee Dolheguy (pictured), 19, faced Melbourne Magistrates Court via video link on Monday charged with the assault of Maulin Rathod, 25

Mr Rathod, who met Dolheguy through an online dating app, was alive but seriously injured when he was taken to Sunshine Hospital where he later died.

Neighbours claimed police and carers frequently visited the home, which is owned by the Department of Health and Human Services.

A department spokesperson confirmed their ownership of the property, but said it was 'not currently operating as a residential care facility'.

Mr Rathod's friend Lovepreet Singh told 7 News that Mr Rathod was studying a Masters of Accounting and had been in Australia for the past four years.

Mr Rathod had visited the property (pictured) late on Monday night to see Ms Dolheguy, who was arrested at the scene and later charged over the incident

Neighbours claimed police and carers frequently visited the home (pictured), which owned by the Department of Health and Human Services

Mr Singh also said the Elsternwick man was an only child, and his parents were stunned to hear of his sudden death.

'His parents are in shock,' Mr Singh said.

'He was a very nice person, he had a jolly nature and he was a cricket lover. I loved to hang around him.'

'He had a very humble personality and tried really hard with his studies.'