From a fellow Australian pensioner, I would say no. Pensions are based on an individual not by who they married & based on how many years an individual lived in Australia. Widow pensions are obsolete. Ask Centrelink Australia for input to be sure.
should have done an Evisa perhaps? I got approved on dental through Hanoi using an evisa. A friend went to the embassy itself in Hanoi & was told evisa approval was done in Bangkok.