Food stamps

My boyfriends ex wife gets $526 in food stamps every month. I’m trying to figure out how this is even legal. She lives at home with her mom and dad, doesn’t pay rent or any utilities much less anything else. Her mom and dad bring home well over 100,000 a year. She has a son which is only hers and my boyfriend and her have a daughter. The daughter lives with us every other week. It is 50/50 joint legal and physical custody. My boyfriend also pays this woman $1000 a month. How is she even getting food stamps?!? Her sons father pays her $500 a month.

This is a family law forum, and this question is inappropriate for this forum.