The family of Nóra Quoirin has said comments by people claiming to act on their behalf are causing them confusion and distress.
The family have claimed their daughter’s body and are preparing to bring her home from Malaysia.
The 15-year-old was found dead on Tuesday in a forested area near the holiday resort she had travelled to with her family.
She had been missing for ten days and an autopsy revealed that she died from prolonged hunger and stress around six days after she disappeared.
A number of investigations into the death are ongoing and the family have said they hope to get “answers to our many questions” about what happened in the days before she died.
The Lucie Blackman Trust has been handling media for the family since Nóra first disappeared.
In a statement overnight, the charity said comments made by people outside the immediate family do not necessarily reflect their views or an accurate portrayal of the facts.
It said the family wish it to be made absolutely clear that the only comments and statements relating to the disappearance, death, investigation and any other matters that are actually from the family are those released by the charity.
“Nóra's family are concerned that continued reporting of comments such as those recently reported are unhelpful and may hinder any investigations, as well as causing confusion and distress for them,” it said.
Nóra's mother Meabh is from Belfast, while her father Sebastien is French. The couple have lived in London for the past 20 years.
She was born with the brain defect holoprosencephaly and her family have described her as very vulnerable.
She disappeared from the Dusun Holiday Resort, around 60km from Kuala Lumpur, on the morning of Sunday August 4th.
Her father raised the alarm after finding her bed empty and a downstairs window open.
Malaysian police said there is currently no evidence of foul play in relation to Nóra's disappearance.
They said there is no sign that she was kidnapped and the autopsy found no evidence that she had been sexually abused.
Yesterday, the family said they were still struggling to understand what had happened and were hoping for more answers as to how their “beautiful innocent girl” had died.