Not unless it is in the contract. You probably have to give her a certain notice period, and if you leave during that notice period, you would still have to pay. For example, I have a two-week notice period, and the deposit my clients pay at the contract signing will go towards that time. If you decide to give a shorter notice period, you still pay for the full two weeks because I would need time to find a new family. I don't take paid vacation, so that part wouldn't apply to me.