Heather and william are planning their son's first birthday party and are inviting both of their extended families to celebrate. just as they dreaded, heather's aunt sonja declines her invitation because she dislikes some of william's relatives and refuses to be in the same room with them. heather calls and tries to reason with sonja, who remains steadfast; in fact, her suggestion is that they throw separate parties for each side of the family. heather and william are left sad and tired that this rift continues to arise each time they try to arrange a family function. heather and william seem to be facing which myth about conflict?