Tell her she is pleasantly plump, no just kidding. Just say "shut up," that's what I tell any female when it comes to any weight questions or issues. It's not hard to lose weight, it doesn't take rocket science or a 30 dollar an hour personal trainer. Exercise is free and if someone is seriously concerned about their weight, they just have to exercise. The reason I tell all women to shut up about their weight is because they either aren't willing to exercise (and thus have no right to complain), or won't eat healthily (and thus have no right to complain). For those with anorexic mind sets that are skinny, eat healthy and exercise but don't look like Jessica Alba, I say, "Does anybody here pay you millions just to work out, as if that were your job?"