Where in North Queensland? Depending upon what she meant by North Queensland, it could be anywhere along or inland from roughly 2,000 km or more of coastline.
As she was Australian, what made them think she was a German spy?
By that time Germany had little or no Kriegsmarine or commerce raider presence in waters around North Queensland. Germany had pretty much abandoned the theatre to Japan.
Nor did Germany have much reason for intelligence interest in Australia in 1943 as all Australian land forces facing German forces had left to face the Japanese, while the remnant Australian air and naval forces were fairly insignificant as components of the British forces.
Was it a ‘back door’ exercise where an attempt is made to penetrate the intelligence sources of the primary target, being Britain, by getting access to the sources of another nation, being Australia, sharing the primary target’s intelligence?
She should have been handed over to Australian security authorities. The Americans had no jurisdiction over enemy spies in Australia, where the Americans were also guests.
When they let her go, where was she and where did she go?
Could you post some images or details?.
I suspect that by 1942 and much more so in 1943 that weren’t many, probably any, German vessels in range of anywhere in North Queensland capable of launching a plane from which she could parachute.
If she landed in the top of Australia, being somewhere near the tip of Cape York, she didn’t land anywhere where she had the slightest hope of making her way down to Sydney. She’d be bloody lucky to survive in that country, no matter how much she had in the way of supplies. She couldn’t carry enough to sustain her for the time it would take to walk out of that country.
If she was an Australian, why would she need to parachute into the middle of nowhere with almost no chance of survival and even less chance of getting to a railhead or bus service or anything else that would get her on the way to Sydney? Why not take a ship and land in Sydney Harbour? The German intelligence services would have been more than capable of arranging that.
What was she required to do when she got to Sydney?
What were her tasks?
How did they bear on German intelligence or other interests?
How was she going to get information back to Germany?