Teachers, nurses? Help please...

Okay, here is the situation. And I am swaring on my grandmother I am not even over-doing the situation...

I have a child in my class who is severely over weight. We are on the third floor and she stops at the second wheezing.

Now, yes, some children are naturally over weight. And I understand that. But here is where I need advice.

She was hospitalized three weeks ago with a severe infection in her stomach...

Every day...and I mean EVERY day her lunch varies from the following:

Burgerking: two hamburgers and fries, chicken nuggets, and a 6' hoagie sandwich.
McDonalds: 10 piece chicken nuggets, large fries hamburger, 6'hoagie sandwich
or
bigmac, large fries, and 6' hoagie
KFC: box of chicken, one leg, one thigh, one wing, corn bread, mashed potatoes, and chicken nuggets. (with this she doesnt get the hoagie)

(Now, mind you, they must be getting this the NIGHT before because you can not get that at 6am when she is dropped off. So, it is cold.)

Her snacks are the same every day: Banana(large) a pack of oreo cookies, bag of popcorn and cheese stick.

Now, I know by watching fast food nation what mcdonalds every day did to a grown man. So, I am a mess thinking about what it could be doing to this 9 year old girl.

I was thinking her stomach is so bad because of what she is eating daily...

What can I do? I work in a private school so there is no way for the BOE to step in. But...what would you do? I just, genuinely fear for her life. The mother is the loonie mother who accused me (and I am the same nationality as her and her husband) of being a racist so I can not approach her...She may pull that card again and it's not about her...its about her young daughter...

thank you in advance...