A young woman in the grips of a profound mental illness which caused her "uncontrollable, pathological rage" should be sentenced to more time in adult prison for killing a man with the cord of a sex toy, prosecutors say.

Key points: The defence is seeking a four-year term in youth detention for Jamie Lee Dolheguy after she was convicted of manslaughter

The defence is seeking a four-year term in youth detention for Jamie Lee Dolheguy after she was convicted of manslaughter Dolheguy met Maulin Rathod on a dating app before inviting him to her home, where she attacked him

Dolheguy met Maulin Rathod on a dating app before inviting him to her home, where she attacked him The court was told Dolheguy had a profound mental illness and a "homicidal urges"

Jamie Lee Dolheguy, 20, was last year found guilty of the manslaughter of Maulin Rathod who died in hospital after she choked and strangled him in the bedroom of her Melbourne home in 2018.

Dolheguy has been held in custody at Victoria's maximum security women's prison for close to two years while the case made its way through the courts.

During a pre-sentence hearing, her defence team asked Justice Peter Almond to sentence her to four years in youth detention, but he indicated that would be unlikely.

Victoria's Supreme Court heard that after the pair met over the dating app, Plenty of Fish, Dolheguy invited Mr Rathod, 24, to her home in Sunbury, in the city's north-west.

When he arrived, she took him to her bedroom and broached the subject of "choke play".

Mr Rathod agreed to be choked on the condition that Dolheguy did not hurt him.

Maulin Rathod went to Dolheguy's house after meeting her on the dating app Plenty of Fish. ( Facebook: Maulin Rathod )

Her plan was to 'harm this man' — prosecutor

The pair discussed a safety plan which involved Mr Rathod tapping to indicate when he wanted her to let go.

But Crown prosecutor Patrick Bourke told the court that Dolheguy's actions that day were based on "homicidal urges" and she never intended on following the safety plan the pair discussed.

"It was never a sexual encounter from her point of view," Mr Bourke said.

"Her purposes were entirely different from the outset," he said.

"Her plan, her thinking, her intention is to harm this man rather than have sex with him.

"He was a means to an end in her mind."

The court heard that within minutes, Ms Dolheguy was choking Mr Rathod, who was frantically tapping.

She whispered to him: "It'll be okay."

"She continued to choke him until he stopped struggling," Mr Bourke said.

"Her arm gets sore, at which point she reaches for a cord."

Dolheguy then manoeuvred Mr Rathod facedown on the bed and pulled the cord of a sex toy tight.

Dolheguy a 'danger to herself and others'

Mr Bourke told the court that Dolheguy had "uncontrollable, pathological rage" due to her "severe" personality disorder.

He said the defence's call for Dolheguy to be sentenced to four years of youth detention was inappropriate because she was at significant risk of serious violence against others.

"She at present, is a danger to herself and to other persons," Mr Bourke said.

But Sharon Lacy, for Ms Dolheguy, told the court that her client's illness and rehabilitation prospects would be better supported by youth detention.

"She is as sorry as she can be for what she's done," Ms Lacy said.

Dolheguy will be sentenced at a later date.