The nanny at home doesn't want to use it. What reason can she leave?

If you sign a labor contract, let her leave before the contract expires, and make some similar severance pay symbolically, because the nature of the nanny's work is a bit secular, so don't be too stingy. No need for the nanny to leave. In this regard, a moderate transition is recommended. Don't feel embarrassed to let her leave, and don't be rude or even picky to her. Nanny and she are just a job that directly explains the situation, and the salary is fixed or even more as a token of appreciation. Nanny can understand.