draglift
It's my understanding that the Flying Doctors television series used two Nomads marked as VH-MSF.
c/n 69 the real RFDS aircraft VH-MSF which appeared in the flying sequences. This aircraft was flying until fairly recently but I note that it is no longer on the register.
c/n 01 the Nomad prototype VH-SUP which was painted as VH-MSF and used in ground sequences. This aircraft is now with the South Australian Aviation Museum.
In addition to these aircraft there is a "VH-MSF" mounted at the Broken Hill RFDS Base. This aircraft is believed to be c/n 33 formerly VH-RCC.
The last Ansett passenger F.27 flight was on 26JUL89.
I regret that I can't assist with your other questions other than confirming your assessment of Ms G.