As a nanny, I have taken 9 days sick in 32 years, none in the last 5 years. 5 of the 9 were 3 when I put my back out and 2 when I had abscesses and hadn’t slept at all the previous night and had a lot of driving to do so didn’t feel safe to be in charge of young children. The other 4 were when my employers sent me home after coming in to work looking and sounding like death!
I will go into work when ill rather than letting my employers down unless it’s dangerous for me to (back or neck problems) I will go in with a tummy bug if the children have had it (and given it to me! Although I very rarely get tummy bugs as I’m meticulous with hand washing and not getting too close)
I would tell her that you need to have a meeting, tell her that you understand that people get ill but that you cannot not go into work at very short notice being that you are just going back. Tell her that if she takes time off you will be unable to pay her more than SSP as you will have to get emergency cover.
I would also buy her a simple cookbook, Delia or Annabel Karmel are good for novices, ask her to have a look through and to let you know what recipes she would like to try next week and you’ll get the ingredients in.
To be fair, my first job my charge ate rehydrated baby food for the entire 20 months I looked after him! He was 7 months at the start and mum and I had no idea! Second job, 2.5 and 1.5 boys who lost their mum 3 months previously, youngest ate baby jars and older one ate sausages or beans on toast or sandwiches! Was a tough job for the first 6-8 weeks, eldest was scared his dad wouldn’t come back, just like his mum. Dad wasn’t eating properly either so once I had the children’s trust, I started cooking for all of them, my repertoire was not that great, dad sent me on a 10 week cookery course!! I now cook for my employers 2/3 times a week.