NORA Quoirin's mother says she heard "muffled sounds" coming from the apartment the night her daughter vanished.
The Irish teen died after going missing from the Malaysian holiday resort she and and her family were staying back in August 2019.
After a frantic 10-day search for her in the jungle beyond the resort, Nora was found dead less than two miles from where she was last seen.
She was found naked, and in an open area, leading many to believe she was kidnapped, but authorities say they don't suspect any foul play.
Her parents have continually stressed that it was out of character for her to simply wander off.
Her mother, Meabh Quoirin said she "very strongly" believes Nora was abducted, and says she heard whispers around the apartment on the family's first night.
"I do also distinctly remember being aware of muffled sounds," she said.
"There was a feeling that someone was close...It felt very close and there was some movement.
"There's many reasons to think about why I believe Nora was kidnapped," she told the coroner.
"And those are important I think to explain. For example, someone had to open the window and it wasn't Nora.
"But I have a number of very precise reasons to believe that my daughter was kidnapped, how or why I am not qualified to say.
"I do believe Nora could have been then subsequently released by captors who would have understood that it would be impossible to move with Nora or that she is a vulnerable child and not necessarily what they quite anticipated," she told the court during a video-link call.