That's definitely not the definition of bulimic. Bulimia is a disease, an addiction, where even if you don't eat, you're going to make yourself throw up. What this person is doing is just controlling the amount of calories absorbed into her body, it's not the healthiest way, but none of us can judge her. And RAIN's right, you need to be healthy not skinny. The human body was originally designed to be fit and thin, so that we could travel great distances and live off the land with out problem. The emphasis was on the fit though. Just go on a run a couple times a week and eat healthy food :) You don't need to make yourself throwup.
Why does everyone want to be skinny? The media is brainwashing this generation! Being healthy is what's important, not skinny. Some people can't lose weight, doesn't mean that they're unhealthy. It's just their body-type. Being skinny does not mean you're healthy. BTW, a lot of the 'skinny' people that you see on tv aren't really skinny ;]
