I have a babysitter who never told me up front she expected to paid for her off days (Labor Day, 4th of July, etc.) should I?

I have a babysitter who never told me up front she expected to paid for her off days (Labor Day, 4th of July, etc.) and when I do not have the kids in her care.

My mother has come up for two weeks to watch my daughter and now the babysitter is asking for me to pay her for one week.

I am a contractor myself so I do not get paid when I am off work but she now expects me to pay her. We never signed a contract when I started using her, nor did she inform me of these provisions. All she stated was how much she charged per day. On top of that my daughter is extremely unhappy there and refuses to eat anything there.