I'm gonna get in hot water for this, but whatever, here it goes:
I'm actually happy for her. Considering her circumstances, she's still fairly attractive and well built. She (and everyone involved) should feel good about it. It should be celebrated, as she was born with a condition she had no control over. Anytime there's more representation for things that people can't control, it can be a great thing.
What should NOT be celebrated though, are controllable/behavioral things. Like obesity. A morbidly obese model fails on both subjective (not attractive) and objective (not healthy) criteria, so don't give me that "this is healthy and beautiful" crap, because it's neither of those things.
End of rant