Now, more than seven years later, police believe her Facebook may be the key to figuring out what happened to the teenager — especially one specific photo.
Katrina disappeared from Sydney’s inner-west in 2012. The last pictures of the 15-year-old were taken on October 25 of that year, when police raided her father’s boarding house in Strathfield. Hours later, she disappeared, never to be seen again.
Months before Katrina vanished, she changed her Facebook profile picture to one of her kissing a man.
The blurry picture shows a blonde-haired Katrina with her arm wrapped around the man’s neck, pulling him into her.
As the state’s coroner holds an inquest into the disappearance of Katrina, the photo has been released in the hopes the man could be the key to figuring out what happened to her.
The inquest was told the man has never been identified with the coroner urging anyone who might recognise him to come forward.
In the lead-up to the inquest, NSW Police also offered a $500,000 reward to anyone with information about Katrina’s disappearance.
The inquest into Katrina’s disappearance has heard the teenager had been living at a handful of state-funded homes — places where she met illicit drug users and sex offenders. It heard Katrina would often flee state-funding housing and led a “troubled” youth before her disappearance.
Ahead of the inquest and $500,000 reward being announced, Katrina’s half-sister Jaide Simpson spoke of how “horrible” it was not knowing what had happened to the 15-year-old.
“It’s been horrible not having answers and not knowing what happened to her. I’ve got so many different theories,” she said.
“Hopefully we can get some kind of clarity and the theories can be put to rest.”
Ms Simpson said Katrina had been planning out her life at the time she went missing and was a “fun, hyperactive, busy and kind” person.
“She just wanted to have the best life,” she said.
“She had goals and things she wanted to do. For her to just disappear, it just doesn’t fit.
“I just want her home. She’s got two nephews waiting to meet her. She’s got a home to come back to.”
NSW Police said the reward would be offered for information leading to the arrest and conviction of those responsible for Katrina’s disappearance, or for information on Katrina’s recovery.
Detective Inspector Christie Houldin said police had spent seven years looking for information on Katrina.
“We are constantly looking for those answers for Katrina’s family and for the wider community who are worried about Katrina. We hold grave concerns for Katrina’s safety,” Det Insp Houldin told reporters.
There had been a number of unconfirmed sightings of Katrina since she was last seen in October 2012, Insp Houldin said.
“Between October 26 and November 2 there were a number of alleged sightings but these have not been confirmed by investigators,” she said.
“The details of the confirmed sighting don’t give any information on where she has gone or where she could be now.”
— With AAP