I will buy some instant noodles, meatballs, sausages, and make sure there is enough rice at home for her to cook.
My maid does not like eating fruit and veg, so I won't leave any of these at home.
$100 should be enough for instant noodles, meatballs, sausages.
When I give her 2 oranges or 2 apples, she can eat them for more than 2 weeks. But if I give her 3 bananas, she will finish them in 3 days.