When patty looks in the mirror, she sees an overweight girls. she is 5 feet tall and weighs 87 pounds. she does aerobics for at least 2 hours daily and eats very little. patty most likely has

Patty most likely has an eating disorder

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.   

If you under eat, your bones will narrow.