- When in doubt, put the two miis in the same room. They'll try and apologize eventually, as shown by a gesture of them up against each others backs with a ellipsis bubble. - Take them on an outing to shrink the quarrel arrow. - If one of your miis is a popstar, use Love Song for a temporary fix. - Just wait until they want to apologize. - Maybe don't choose tank as a job you dum dum.