A pregnant Somali refugee who says she was raped on Nauru will return to Australia to discuss her abortion and mental health with medical experts, Immigration Minister Peter Dutton says.
He rejected suggestions the decision was influenced by concern from the United Nations, which on Wednesday urged the Turnbull government to allow the woman "a decent option".
The 23-year-old woman who goes by the pseudonym Abyan has alleged a rape on Nauru 15 weeks ago left her pregnant. She is seeking a termination. 
The Turnbull government flew her to Australia for the procedure earlier this month, but returned her to Nauru a few days later, claiming she rejected treatment when it was offered.
Abyan's advocates said she simply asked for counselling so she could make an informed decision before proceeding.
On Wednesday Mr Dutton said medical experts on Nauru had met the woman and she had accepted their advice to travel to Australia for medical assistance, despite initially saying she did not wish to return.
He did not say if she would proceed with the abortion, saying "ultimately this is a decision for the lady... this is really quite a private matter" that involved mental health issues and an alleged rape.
In Australia, Abyan would "speak to a doctor in terms of her termination but also to seek mental health services".
Mr Dutton would not say when she would return, lest the matter become a "media spectacle".
The United Nations human rights agency on Wednesday condemned the official response to sexual assault victims on Nauru and said Abyan should urgently receive an abortion if she wants one.
Mr Dutton said he was not swayed by the entreaty and plans to bring Abyan to Australia had "been in the making for some days".
UN High Commissioner for Human Rights spokesman Rupert Colville said the organisation has been in direct contact with Abyan who is mentally and physically fragile and "deeply traumatised by her experiences since the day of the alleged rape".
"She has refused to give information to the Nauru police about her attacker because she is understandably afraid of reprisals," Mr Colville said in a statement.
"She does not feel safe, given that her alleged attacker lives on Nauru, which is a very small island state with a population of around 10,000."
Australia and Nauru must urgently provide "a decent option" for Abyan, enabling her to obtain "adequate mental and physical care and to terminate her pregnancy if she desires".
Mr Dutton has previously said asylum seekers and refugees brought to the mainland for medical treatment should not attempt to seek permanent resettlement in Australia.
Opposition Leader Bill Shorten said he did not understand why it had taken so long to get Abyan the help she needed.
"At all times, Labor has called for an assurance that this young woman's best interests are the priority here," he said.
"We need to know that Abyan is being treated with dignity.
"I have serious concerns about the way this woman has been treated by the government since she first made her request for a termination.
"This is a distressing and complex case and Abyan's privacy must be respected. Labor is deeply concerned that the Liberal government has mismanaged this case and the impact that this has had on this young woman.
"She must be provided with unfettered access to safe and appropriate healthcare and counselling professionals."
Meanwhile, the Nauruan government says those calling for Australian media access to the Australian-funded detention centre should remember Nauru "is not a state of Australia".
"Many Australian media outlets and journalists have no respect for Nauru or our culture or people," Justice Minister David Adeang said in a statement on Wednesday.
His government refuses to answer many "ridiculous" questions posed by Australian journalists because "Nauru has no obligation to answer to Australian media".
Follow us on Twitter