She does sound like a piece of work, but I can understand the underlying sentiment. I spent several years in elementary through middle school refusing to wear flattering-looking or even new clothes, because my school was very homogeneous middle class and I, as a doctor's daughter, got quite a few snotty comments about being the "rich girl" from my peers. This is despite my parents taking a fantastic attitude about money (we never knew how much dad earned, we always had enough for what we needed and a smattering of what we wanted but we were by no means spoiled, and my parents were careful to make sure we learned early on to make purchasing decisions based on quality and usefulness and not advertising/peer pressure/brand names/etc.) I learned to never talk about money, ever, and to lie about how much things cost sometimes because people would judge me for them if I didn't. (My sister and I shared a new car in high school, for example - we did get a fantastic price because my grandfather was a VP at GM, so the cost of a new car wasn't that much more than a used car. We paid for gas, but my parents paid for the car. I told everyone I was putting part of my summer job money toward the car, because that's what all my friends did . . .)
So yeah, long story short, I'm not trying to apologize for her - but I don't think she should have to defend her financial circumstances, either. I'll admit I'm not comfortable with the tone of some of the comments here, in the "poor little rich girl" vein - she chose an irritating way to express her opinion, and she may well be spoiled/bratty/etc., but bullying about one's financial situation can go both ways.