I just mentioned this the other day, but I had some <$100 special from Walmart in our old apartment for 5 or 6 years. Finally completely rusted out, and I had it covered. I replaced it with the Weber Q200. For being a "portable" grill, it worked really well. Especially with the Weber stand.
We ended up moving a couple years later and I upgraded to a Weber Genesis line. THAT is a nice machine. Heavy, solid. The Q200 is now my tailgating rig, and it works really well for that.
If she doesn't want to spend the $$$ for a Weber grill, I'd have her buy as big of a Q as her money would allow. And the cart to go with it.