I think a chore a day is pretty slim. What is minimum wage in your region. I would make her work off hourly the 500 dollars she spent.
As soon as hopmework is done she would be involved in something such as raking mowing cleaning or whatever I felt like doing.
At the end of the day I would show how many hours she worked and how many hours she had left so she would know exactly how dreary the next week would be or two weeks or 3 weeks.