A Dutch tourist who was held captive for six weeks and repeatedly raped and attacked by a couple in a Melbourne hotel room has told a court her life has been destroyed.

The 21-year-old woman, who cannot be named for legal reasons, described her ongoing trauma as she read her victim impact statement via videolink to the County Court in Melbourne.

One of her attackers, 34-year-old Jennifer Mary Peaston, was due to face trial, but on Wednesday pleaded guilty to two counts of intentionally causing injury.

Her accomplice, 48-year-old Alfio Anthony Granata, had earlier pleaded guilty to raping the woman, assaulting her with weapons and threatening her on multiple occasions.

The pair was originally accused of kidnapping, raping and attacking the Dutch woman in a hotel room in Preston, in Melbourne's north, over several weeks in late 2012.

When the couple first met the tourist they smoked the drug ice and had consensual sex at Rydges Bell City hotel, where Peaston and Granata were living at the time.

The court heard that days later Granata became obsessed that the two women were having a secret liaison and started to beat and threaten them.

The victim said she thought she would be killed if she tried to leave the hotel and Granata had also made threats against her family.

Police said the pair assaulted the woman with a range of items including a meat tenderiser, a rolling pin, a vacuum cleaner and a jet lighter.

Prosecutor Nanette Rogers said Granata claimed he was possessed by the devil and the spirit of his dead grandfather.

Dr Rogers told the court on one occasion Granata put the victim's nail cuttings, hair and blood in an envelope as part of a supposed ritual to destroy her soul.

Video taken from Granata's phone was also played in court, showing him threatening the women and hitting them.

Peaston 'psychologically tortured' by Granata, court hears

Peaston sobbed and hyperventilated as the victim told her she now lived in a "black hole of pain and sorrow", and would never feel safe again.

"I still experience a lot of panic attacks, I'm still afraid of people," the victim said.

"When people touch me I disassociate, which will impact me for the rest of my days.

"I am still mixed up and really angry. Sometimes it feels like a black hole of pain and sorrow."

A Dutch woman was held captive in a hotel room at Rydges Bell City in Preston in 2012. ( ABC News )

The court heard Peaston was also subjected to psychological torture and manipulation by Granata.

Peaston's lawyer, Nola Karapanagiotidis, said Peaston was also a victim and endured violence, emotional and sexual abuse.

Judge Frank Gucciardo agreed the video showed psychological torture and manipulation of the highest order.

He said he understood that when subjected to that kind of onslaught, it challenged her ability to remain sane.

Dr Rogers said she was not seeking a jail term for Peaston because she had already spent nearly two years behind bars.

The 21-year-old victim told the court she now suffered from depression and anxiety, and still had scars on her body from the attacks.

"I suffer flashbacks. At night I wake up bathed in my own sweat fighting against something that isn't even there," she said.

"I don't feel safe alone, can't use public transport...[I] can't go out at night.

"I feel like something terrible will happen again, it just kills my enjoyment of life."

She also said the ordeal would make it hard for her to study or find full-time employment.

Granata will face a pre-sentence hearing at a later date, while Peaston's case continues on Thursday.

ABC/AAP