We had a brilliant au pair until I started maternity leave at Christmas. We are now considering our options for when I go back to work in September. Our new baby will be 9 months and we also have two other children (5 and 3). Our older children will be at school/pre-school from 9-3.30 on our working days so the majority of the childcare will be the baby. Do you think an au pair would be too young/inexperienced to be left with a baby all day?