She makes $65k AUD in rent? Is that what you are saying? If she makes $65k AUD a year, including rent, she must have a lousy job.
My investments make more than that a year. Yeah, do the math for the the amount of capital needed to generate more than $65k AUD a year. It's why I laugh at your $240 rent and $11 cask wine posts. I didn't work all my life, and invest wisely, to boast about $11 cask wine in the latter years of my life, before I kick it.
You put your house in your Thai wife's name and then rent it off her for just the right amount to claim rent assistance.
It will catch up with you, and her, one day. Told you this before.