Family Thanksgiving Dinner Invites Discussion on Menu Choices

• A reader is invited to a family Thanksgiving dinner by their sister-in-law.
• The sister-in-law cooks straightforward food and accepted the reader's offer to bring a veggie menu staple.
• The reader is considering holding back on flavor as a peace offering.
• The reader seeks etiquette advice on the matter.
• The reader's question is posed to Miss Manners for guidance.