A young woman has claimed the Northern Territory Police did not adequately investigate an alleged sexual assault against her and that the experience has exacerbated her trauma.

Key points: The woman said she believed a man spiked an alcohol shot that he pressured her to drink with a date rape drug

The woman said she believed a man spiked an alcohol shot that he pressured her to drink with a date rape drug The alleged victim said the trauma from the assault forced her to change jobs

The alleged victim said the trauma from the assault forced her to change jobs Police responded with a statement saying they were "unaware of any complaint against the police in relation to the matter"

The 21-year-old Aboriginal woman said she was assaulted in her Tennant Creek home on May 6 by a non-Aboriginal man she had met briefly at a party that evening.

She said she believed he spiked an alcohol shot that he pressured her to drink with a date rape drug, and said he then broke into her house nearby once she returned home from the party.

The woman said she had other drinks at the party, but was not drunk, and returned home after drinking the shot which made her feel sick.

She said she went to the Tennant Creek Hospital after the alleged assault, where a rape kit and blood test were performed, and that she was then taken to the police station to make a statement.

She said officers gave her the impression they thought it was a case of consensual sex.

"I would have appreciated it if he had been arrested," she said.

"They just asked me such horrible questions, they didn't take statements from witnesses who were at the party."

Woman's family confronted alleged assailant

The woman said when she told her mother, uncle, and sisters about the alleged assault, they became angry and went to the man's house to confront him.

She said the police were called and her mother and uncle were arrested and charged with home invasion and aggravated assault.

"Within 10 minutes of that happening, the police didn't muck around about arresting two people from that matter," the woman's father said.

He said he was surprised his daughter's alleged attacker was not arrested.

"If it was the other way around, if it was a black person and a white girl, a lot of people are saying it would have been different, that's the community saying that," he said.

Alleged victim living with nightmares

The woman said the alleged assault had made her afraid of the dark.

"I had an admin job, but now I'm constantly having nightmares which keep me awake," she said.

"I've had to get a night shift job now, so that I can sleep during the day, when I'm not frightened to because it's light."

She said the alleged assault was public knowledge within a day.

"It's such a small town, everyone knew about it within 24 hours, and some people were saying I had just lied, and just called it assault," she said.

The woman's father said his daughter's alleged attacker came to his house on May 15 with a friend — armed with an axe and iron bar — to threaten him, but were put off by his dogs.

He said when he reported this to the police, officers came to his house immediately, but told him they could not see any weapons concealed on the men walking away from the property.

The woman's father said his daughter's alleged attacker has now left the town.

'They can make a complaint'

The ABC asked NT Police what investigation it carried out into the woman's sexual assault allegation, whether the case was treated differently to the allegations that her mother and uncle are now facing charges, and what action has been taken in relation to the alleged threat against the woman's father.

The police responded with a statement saying they were "unaware of any complaint against the police in relation to the matter".

"The investigation is ongoing and therefore NT Police are unable to make further public comment," the statement read.

"If a person affected by the matter is concerned about the investigation status or progress they can make a complaint against police to the Officer in Charge of the Tennant Creek Police Station or the Ombudsman's office."