There is an argument that the Hague Convention is a medicine that's worse than the disease. But there is no easy way to resolve child custody issues when the parents want to live on opposite sides of the world.
Why does the airline have to be involved? It's perfectly legal to travel on a one-way ticket to Australia and you don't have to give a reason. However in order to avoid having to argue the issue at check- in you should either:
- get an ok in writing from airline management; or - buy a return ticket which may not cost much more
As for arriving at the airport, there are supervisors and managers on duty all the time to deal with issues like this. Anything complex is always referred to secondary inspection anyway. Which is why she ought to have access to professional advice immediately upon arrival.
If the 676 was granted with condition 8503 then there would be a more complex issue to sort out. Condition 8503 is effectively non-waivable (in 99% of cases) and it is not possible to get an ETA if you have another substantive visa in effect.
Jeremy
-- This is not intended to be legal or professional advice in any jurisdiction
