2006 530xit SportWagon that I just picked up in October. It is a 6 Speed Manual with no options, and this is honestly the only reason I wanted it. The E60/61 has so many electronic doodads anyway...when you are buying used with a limited CPO or no warranty, you need to budget for some electronic repairs that a Camry would never suffer. The idrive is not too bad, I really haven't messed with it too much although I'm sure I have some customizable vent settings to take advantage of, somewhere, in some menu.
Another thing to keep in mind is that the newer 3er is about the same size as an old E39 5er. My E61 has more room than the new 3, but not much. I'd look for a base 2006-2007 E90 3er with the N52 six (no turbo madness) and AWD and Automatic transmission if she fancies those things. I suspect that the cost of ownership is lower with a 328i than a 5 series anyday.
-Ben