Just saw this. I want to say that I'm sorry for your plight and I know exactly how it feels. I lost Nara for a whole month before I got her back.
Molly will most likely approach the first human on the next morning, if not right away, then definitely as she gets hungrier. Concentrate your search within a mile radius. Knock on doors if you have to. You never know, someone might know something useful.
I'm new here, and this happened shortly after I signed on. Molly's photo in MollyMouse's signature immediately captured my attention. She's so adorable, I even told a Quaker friend that she had stop in to see her pictures.
My heart aches for a little bird in Australia and the people who love her...