Police are searching for an Adelaide woman who has been missing for more than two weeks in what they say is a "baffling" case.
Police do not believe anyone else was involved in Colleen South's disappearance, but her family is sceptical of their theory.
Ms South's car was found damaged and abandoned in western Victoria on July 3.
The 58-year-old grandmother was last seen in the Adelaide suburb of Renown Park on July 1 and was captured on CCTV at the Liquorland store in St Agnes on July 2.
A witness then saw her by herself in her car in the Victorian Mallee town of Ninyeunook between 3pm and 3:30pm the next day.
A farmer then found her 2006 Hyundai Getz hatchback at Bunguluke, near Wycheproof, at 4pm the same day.
Police say the car had hit a ditch and sustained some damage, and the front airbags had deployed.
A journal found along with other belongings near the car had the words "help me please" written on its last page.
Police searched area last week
Inspector Gerry de Vries, from Victoria Police, said a search in the area last week did not find any more evidence or an explanation of where Ms South was headed.
"We've scoured that area," he said.
"We've had horses, our Air Wing, dog squad, a number of police out on foot and assistance from the SES and we haven't been able to find any evidence other than what's in the immediate vicinity of that car."
He said the car was locked and driveable and the keys were in Ms South's handbag, along with her bank and identification cards.
He said Ms South's family had told him she was a friendly person.
"She's a very sociable person around other people, so it may well be that she's made friends with somebody and she's left that location and that's the thing that is baffling because there's nothing," he said.
Concern at unusual behaviour
Ms South's daughter, Veronica, said her mother had been planning to move to Queenstown, within Adelaide, on the day she was last seen but, instead, she left her furniture in the removalists' truck and disappeared.
While police do not believe anyone else was involved in her mother's disappearance, her daughter does.
"She could have been writing and she wrote 'please help me' on the back of her notebook.
"She could have been writing and someone pulled up beside her and she could have gone in the car because whenever she goes on holidays she's very friendly and very vulnerable and that's what we're concerned about."
While her mother "tends to go on holidays when she gets overwhelmed", Ms South, 21, said it was unusual for her not to contact her family for so long.
"We just want her to be safe," she said.
"We're just hoping she is safe and we haven't lost hope in finding her."
Ms South is described as 154 centimetres tall, with a heavy build, green eyes and brown hair.
