Ds and dd have been invited down to the neighbours this evening, their son has made his communion and they're having a small party, bouncy castle etc. Dhs neice is here, MIL was supposed to be looking after her but decided to leave her here and go and get her hair done instead. Dh thinks we should send all 3 kids down to the party, I think its rude to send dn when she hasn't been invited. AIBU?