Niamh Maye, then 18 years of age, was fruit-picking in Batlow on a gap year when she planned on going to Sydney to see her family for Easter.
She left a campground in Jingellic, about an hour south of Batlow, on March 30 in a black Holden hearse with an associate Jason Nicklason, also known as Jack.
She had made plans to travel to Sydney to meet her sister, but this reunion did not occur.
No charges have ever been laid in connection to Maye's disappearance and her body has not been found.
Maye's family have launched a new website, missingniamh.com, and will work with producers of the true crime podcast series Casefile to create a podcast called Missing Niamh.
Her mother Anne, 81, said the family hoped the new ways of spreading the word about her daughter's disappearance and the podcast might help get some answers.
"We have never given up hope that we might be able to bring Niamh home and give her a proper resting place," Anne said.
"She has always been with us and always will be."
Maye's father Brian, 81, hoped the family could one day bring her home.
"We will always honour the 18 years she filled us with her brightness," Brian said.
"We miss our loving, cheeky, creative, fun daughter, sister and aunt."
In October of the same year he was last seen with Maye, Nicklason was arrested in Brisbane for the unrelated bashing and rape of a woman.
While being escorted by police, he escaped custody and fell to his death from the top floor of the Roma Street transit centre
Police have since named Nicklason as a suspect in Maye's disappearance. A 2012 coronial inquest determined the young woman would have died at or near Tumut on March 30 or 31.
Nicklason had previously told police he'd last seen Maye after leaving her by the roadside on March 30.
She had planned to meet her sister Fionnuala in Sydney before the pair travelled home for Easter, but Maye never arrived.
Maye was the youngest of seven children who grew up in Armidale, northern NSW.
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