The authorities always want to know where you are, so every motel you go to want a copy of your passport and they are linked to immigration, it's different when you live here .
What she wants and what she gets all depends on how Naive you are, just do little Reno,s here and there and space it out over a few years , then you will have an idea if she can be trusted,, it's a bit rich going for a full Reno in 1 hit,, unless you have children to her or been with her for 5 or 6 years and you didn't get her out of a bar.
I think a fair bit of what you can and can't do on these posts, is all hearsay and Chinese whispers, I asked at my local immigration office in kamphaeng Phet and they told me I can do what I want at our residence which included 3 Ria of corn and 4 Ria of rice but said don't help the neighbours, whether this is his opinion or law I don't know. But I asked the question and that's what I got.
When I have had the 30 day extension after 60 days I've been pulled up by immigration and for some reason they wanted to see my receipt for 1900 baht, I showed them, they said all good , on your way, So it was a bit strange but nothing to stress about if you go by there rules.
Not 100% on this but I think she might need Australian citizenship to recieve any type of pension. Marrying an Australian does not automatically give Australian citizenship.