DEAR ABBY: My husband and I want to host a college graduation party for our son. The problem is, one of my sisters has four children -- three teenagers and an 11-year-old who doesn’t behave at parties. My sister calls her “Our Little Precious.” She and her husband come to events, ignore the kids and want this to be their time to “relax.” Another sister has two teenagers who are very well behaved.
M…