My fiance's cousin lives in Maine and our wedding is in Pennsylvania. This cousin is getting married in two days to a person we have never met. We had already done our guest list and really cannot afford to invite her new husband. We did not give plus ones to her mother or her sister so if we invite her new husband that would mean we should give plus one's to the mother and sister which would be three extra people we really cannot afford to invite nor do we know. Further they announced to the family that we are getting married only a week before their wedding after we already created the guest list and budgeted for our wedding. What do you recommend?