There's a lot to consider here.

A) Is the family really poor or do they chose to use their money for other purchases (gas, liquor, cigarettes, etc..) and depend on the kid to bring in food (cause he won't get fined and if he does he won't get a large sentence.).

B) Is the family on welfare? Do they receive food stamps? Are they assisted by the government?

C) Are the parents working? Are they unable to work?

D) Do the parents even know that the kid is doing this?

I do not even know where or how to answer this question, but I would tend to lean towards leniency with the kid until you know more of the families circumstances.

Matt