Is This Disgustingly Skinny?

I'm just trying to look out for her. My neighbour, is REALLY SKINNY! She's 13 years old, and is skinny as Mary Kate Olsen, Victoria Beckham, Paris Hilton, etc. She says she's not anorexic!! She says it's because she's like Asian, and has a fast metabolism... What's being Asian got to do with it??? Plus, she eats SUPER SMALL PORTIONS! (at least to me) and I'm not overweight. And she has noooo breasts at all which is weird.. But she's really pretty though.. I just think she'd even look more beautiful if she was a bit chubbier! She runs sometimes too. Not distance, she's just really fast! And she gets cold easily... Opinions please! ;)