The search for London girl Nora Quoirin, 15, is continuing, one week after she disappeared from a Malaysian jungle resort.
According to the missing persons charity the Lucie Blackman Trust, which is supporting the family, Nora's parents are also considering offering a reward for help to find her.
Police are still treating this as a missing persons case even though the family think she was abducted.
An open window was found in the cottage where the family was staying at the resort.
Deputy police chief Che Zakaria Othman earlier said police have received the lab test results of fingerprint samples taken from the family's accommodation.
And Ireland's police force - Garda Siochana - has sent a liaison officer to Kuala Lumpur to assist, it emerged on Sunday night. It was donated by an anonymous Belfast-based business, Meabh Quoirin said.
A reward of RM50,000 (S$16,500) has been offered for information leading to the return of missing Irish teen Nora Anne Quoirin.
In the short speech, Ms Quoirin held back tears, as her husband stood beside her, rubbing her arm as she said Nora will "miss cuddles at bedtime".
"We are so grateful for everything you have done for us, as well as to everyone here and those who are helping away from the site", she said.
Shaman Khalid Mohamad said he believes the girl was lured by a genie, an invisible spirit believed by Muslims to inhabit the Earth and influence mankind by appearing in the form of humans or animals.
Posters of Nora flashed on giant screens before and during the concert before band member Nicky Byrne pleaded with the 7,000-strong crowd to keep find her. "She is not independent and does not go anywhere alone", they said.
The resort is at the foothills of the Titiwangsa Mountains and borders the Berembun Forest Reserve, 39 miles south of the capital Kuala Lumpur.
On Monday, a handful of traditional shamans - known locally as "bomoh" - appeared to go into a trance in the jungle as they conducted rituals to help locate her.
Nora was born with a small brain caused by Patau's syndrome, limiting her speech, movement and coordination. Rescuers on Friday also began playing voice recordings of the mother to try to draw the girl out as they combed the hilly forest terrain.