Senior Sergeant Craig Madden said it appeared the woman had gone as far as she could in the bush, then lay down, which is characteristic of a person suffering from dementia.
"Without the Wander Search pendant, we would not have found the missing woman tonight.
"She was in a very gnarly piece of bush and it was only because of the pendant that we were able to narrow down the search area.
"I'm confident that without the pendant she would've spent a very uncomfortable night in the bush and I wouldn't like to say what the outcome of that could've been."