forget de facto. She won't be able to establish that. If you guys living on the other side of the planet isn't enough, the fact that there are no love letters? flowers? ongong emails / text messages. FORGET IT. She has nothing. So if she mentions it you need to clearly state to her that you're not in a relationship with her, other than a financial one around tennancy.
And yep - you need the QLD version of that paperwork
And yep - you need the QLD version of that paperwork