Perth teen raped in Bali

Indonesian police identified but let go a man accused of brutally raping a Perth woman in Bali on Christmas Day, allowing him to escape the island.

The man allegedly assaulted the 19-year-old in a sustained attack that began in a villa and continued during a traumatic 30-minute taxi ride after she tried to escape.

When the woman reported the assault the next morning, she was subjected to a "virginity test", watched on by medical students in Bali's Sanglah Hospital.

She has been in hospital twice since her return to Perth for an aggressive sexually transmitted disease - "a revolting, painful reminder" - and must wait four months on an HIV test.

Her parents have now appealed for help to find her attacker.

Hours after the alleged assault, the woman named the man she said had raped her as Henry Alafu, identified him and led Bali police to the Jimbaran villa where the incident took place.

But police did not arrest the 25-year-old and told the woman they wanted to follow him to Jakarta so he would lead them to a "bigger network of criminals".

The man is now believed to be on Java with a fresh warrant out for his arrest. "As the days and weeks go by we lose hope that there will be any justice," the woman's mother said yesterday.

The teenager said she was still fragile. She felt violated twice after getting no choice but to have the invasive virginity test she was told was necessary to report a rape to police.

"The hospital report confirmed I had been raped and assaulted," she said.

"The police issued a warrant for his arrest. I don't understand why he hasn't been arrested.

"This man raped, threatened and humiliated me. He laughed in my face at my fear and helplessness.

"I was terrified. I have had my fair share of nightmares since the incident. Sleep is still difficult."

In the days after the assault, the family employed a Balinese law firm to help. It billed them $US13,500 ($17,300) for six days work, including $US400 for replying to an email from the mother.

Her mother, who was holidaying in Bali with the 19-year-old and her younger sister, said the whole family had been traumatised by the rape and aftermath.