Make room for the other version
Ask what the other person understood before assuming that you are arguing about the same facts. For a message about how to address favoritism in a family, use this factual base: separate the event, money, care, decision, or promise from judgments about loyalty and character.
Correct the record precisely
Correct only what you can support, acknowledge any real impact, and propose a practical way to prevent repetition. Ask each person for their understanding and propose a documented next step or neutral conversation. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Agree on a testable next step
Do not use children, illness, holidays, or relatives as leverage and do not circulate private messages. Use mediation, legal, safeguarding, domestic abuse, or emergency support when power or safety makes direct discussion inappropriate. Do not recruit an audience, publish private evidence, or turn a misunderstanding into a campaign about character.