A teenager has been sentenced to two years in a youth detention centre for a violent home invasion in which she tied up her victim and forced him to eat dog food.

The Victorian County Court heard Georgia Bucknell, 18, ambushed the man at his flat in the Melbourne suburb of Murrumbeena in November last year, believing he was spreading rumours about her.

She tied the 18-year-old to a chair using electrical cord and splashed kerosene on him, knowing he had suffered severe burns as a child.

She also held a knife to his throat and stuffed a toilet roll in the teenager's mouth, secured it with tape and hit him on the back of the head with a broom handle.

A Bible was placed in a kitty litter tray at his feet and a lit object was placed close to the victim by others who went to the house with Bucknell.

Judge Frank Gucciardo told Bucknell the attack was a "cruel, degrading and terrifying ordeal of fear and violence that is intolerable to any right-thinking member of the community".

Judge Gucciardo said the teenager was covered in kerosene and feared he would die.

At an earlier hearing, Judge Gucciardo said the attack was like a scene "straight out of (the movie) Reservoir Dogs".

That hearing was also told Bucknell believed the victim was spreading rumours that she "hits her missus".

Judge Gucciardo said Bucknell's extreme reaction was sparked when she felt the stability of her relationship with her girlfriend was threatened.

He said she had "wantonly" violated the victim's rights by invading his home.

The victim's X-Box and mobile phone were stolen during the attack and his bank card was used to withdraw $300.

Judge Gucciardo said the victim had been left traumatised by the ordeal and had been referred to a psychologist.

Bucknell was sentenced to two years in a youth detention centre, to be reviewed by the parole board after nine months.

Judge Gucciardo said Bucknell, who was adopted as an infant and had a troubled childhood, left home at 14 and felt alienated because of her sexual orientation.

He said it would be totally inappropriate to send Bucknell to an adult prison given her age and immaturity.

The judgment came on the same day Victoria's Director of Public Prosecutions Jeremy Rapke, QC, announced he would immediately push for tougher sentences in all aggravated burglary cases.

- ABC/AAP