The au pair hardly eats anything
Find out how your au pair likes the food in your country. Watch your au pair’s eating habits and if you notice that the au pair eats very little or hardly anything at all, you should mention this. Ask your au pair what they like to eat and have the au pair come with you the next time you buy groceries to help you shop.
Many host families eat at least one meal together every day. Tell your au pair if you want them to join you. Write down the time of the meal in the house rules for the au pair. If you want your au pair to help you set the table or clean up afterwards, mention this in the house rules and talk about it with the au pair.