Our nanny of 3 years gave her 4 week notice on Monday. She is part time and has swapped to a full time post. My main concern is how to tell my two children - DD1 is 6 - year 2, DD2 is 3. They have only ever had her as a nanny and would probably put her just below the family as most loved person. How do we break the news and let a new nanny come in with a positive impact????