She can go to Taco Bell and get bean burritos for $1.29 each. They are good for you. I should do that myself and lose a few pounds.
A 20-pound bag of rice, a few bags of various kinds of dried beans, supplemented with some chicken breast ($1.99/pound on sale at my local supermarket), and she's all set.
The problem with "malnourished" kids on food stamps is that Mom never learned to cook, so they live on junk food.