Looks like you and me getting the Aussie goss from the same news.com.au. :D
I agree that sadly it's her fault and she is totally to blame as there is plenty of resources out there that advise you how to try to manage your money. The first article I read before buying my place was to assume you have enough to cover a 2-3% increase in your home loan rate. The reason being is that the worse thing then being in debt is financial stress. If you can't afford it, really please do not buy it.
My wife is similar to yours, maybe only 10% interested in the household finances. Only time she takes notice is when I tell her to reduce the amount we spend on takeaway or eating out.... Flip side though, would you actually want your wife to be fully in your face with the finances. That would mean you have to make more disclosures on your "alternative" investment..... !LOL
RE: Feeling FUD-ish?