Good on her!
Ok, let's look at the basics first.
Does she want or need a second vehicle?
How often does she anticipate using it.
Yep, plenty of second hand hi ace or similar units out there in her price range, but $20k would give her a lot of hiring potential. Does she want to drive to WA or similar, or would it just be easier to fly there and do the trip she aspires too for a few weeks in a rental?
So, IMO, if she wants to be in the road for three or four months of the year, yep, her own rig may be the go. If it's only a month, then hire. In between, she needs to have a think about it.
