Police now believe Pearce-Stevenson was killed late in 2008.
For several years after that her Centrelink payments were still claimed and wages passed through her account.
At one point a woman allegedly spoke to Pearce-Stevenson’s mother saying she was her daughter.
The mother – who died in 2010 – even deposited cash in her daughter’s account.
Text messages were sent from Pearce-Stevenson’s phone assuring people she and her daughter were OK.
Altogether $90,000 went through Karlie’s bank account between the estimated time of her death and 2012 when the last transaction was recorded.
The mobile phone was used until mid-2011.
In 2010 a woman in a wheelchair allegedly went into a South Australia bank accompanied by a man – producing documents that identified her as Karlie Pearce-Stevenson and convincing the bank it was her.
The same year a woman in a wheelchair – believed to be the same woman – allegedly entered Centrelink with Pearce-Stevenson and Khandalyce’s identification papers to update details.
Staff at the time did not see any cause to believe she was not who she said she was.