Oh no, Lisalisa! What bad timing. Are you sure it isn't you? Just kidding.
This is perhaps a daft idea, but I wonder if it's possible to put an add in alocal paper of wherever youmight find a new nanny / au pair. Like, if you like French girls, could you put adds in French papers?
Perhaps a dumb idea. Just trying to help because I remember when I was in a panic to find a new nanny my whole life was literally turned upside down. I was not pleasant to be around for at least a week.
Or, what about finding a close by university that has an education or childcare degree programme, and putting an add up at the school. Obviously, these girls (boys?) would have studies so might not be full time. But, it might get you through a crunch.
When is your nanny leaving?