Actually, she has the right to use 2 weeks vacation which I don't think you have problem with. But if she takes her son for the rest of the summer then I would suggest you to either ask which you did already for her to pay to hold the spot or find another client to fill his spot. And if you having problems with this mom I think best you should find another family but again there is no guarantee that the new family will be as good as gold. You need to do lots of thinking.

I don't give any body free vacation but I don't charge for my vacation. If I go on holiday I will need a month. Two weeks won't be enough as my home is on the other side of the Atlantic