I am booked on a domestic leg of an international flight (QF 19) in a couple of months. Since booking, my wife has changed all her ID to my surname (we were only married in January) and so has no Govt ID in the name on the flight. This would not normally be an issue for domestic as ID is not required and can check-in online. Since we are going through the international terminal - will she at any time be asked for ID? If so - would a cancelled passport (with old name) together with her new passport suffice?