I get having a big family means you'll spend more money but what she actually buys is branded processed rubbish. She could meal plan, prep healthy meals for half the price then use that money for holiday,activities and days out. Yesterday the kids went to school and the supermarket that's it. Lighter nights are here so could even walk home from school/go to the park or even a walk. She doesn't understand the concept of money as she doesn't work, got given a house and probably Dave and his family pay the rest.