If, as it said, she bought the free lunches with her own money, there shouldn't have been an issue.
It's just liberal school bureaucrats being liberal school bureaucrats.
And, yeah, the slice of cheese on a hamburger bun sounds better, healthier, and more filling than the lunches forced on kids under Moo- Chelle's "Healthy kids" initiative, all the while Sasha and Malia gorge themselves on decadent gourmet food at their private school.