I'm wondering what I am and am not expected to invite our au pair to at weekends. e.g. this weekend we are all going to go to my mother's on mothers day for lunch. Am I expected to invite our au pair to this sort of thing (I know my mother will not want anyone but immediate family)? What about when we are invited to friends' houses as a family (I'm not sure I'd be delighted if I invited friends and they brought along an au pair)?
Obviously the ap may decide she doesn't want to come along but I'm trying to get an idea of what host families are generally expected to invite their aps along to (or not).