Blended families can present some unique challenges, especially when it comes to establishing boundaries. One woman found herself struggling with her stepdaughter’s refusal to follow household rules.

DEAR MISS MANNERS: In my grandparents’ home, no food was allowed to go to waste. After a meal, if there was any food left on someone’s plate, it would either be claimed by someone else or added to the ...

DEAR MISS MANNERS: When we have a large family dinner, between 10 and 21 people, there is one child whose parents allow her to be on her tablet, with volume on high. She comes into the house, whizzes ...