She's starting next week - 3 days a week looking after my 7 month DS and my 3 year old DD (who'll be at nursery 2 of those 3 days but she'll be doing pick ups and drop offs). She is lovely - just wanted some ideas/tips on making her job easier. It's been sooooo difficult finding someone we liked, I don't want this to go wrong! Anything I definitely should do? Anything I absolutely mustn't do?