If you don't already, reassure her that you think she looks good.
And make sure she knows what everybody else has said-- that skipping meals is uneffective. When your body goes into starvation mode, you start burning muscle instead of carbs/fat, and her body will turn food she eats more quickly into fat since it doesn't know when it'll get more food... so she's going to be losing muscle, gaining fat, feeling horrible, slowing down her metabolism, possibly screwing up her reproductive systems... and generally just being super unhealthy.
I didn't like any of your poll options, by the way.