Check who should receive the message
Confirm that you have the right person, the right role, and permission to disclose the information involved. For a message about how to split inheritance related expenses fairly, use this factual base: list the amount, date, reason, receipt, prior agreement, and any part that remains genuinely disputed.
Separate information from interpretation
Label confirmed facts, open questions, and the specific decision that belongs to the recipient. Propose a payment, refund, evidence exchange, or installment plan with dates both sides can assess. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Use formal help when stakes rise
Do not threaten public exposure, add invented fees, or treat hardship as proof of dishonesty. Use secure payment methods and qualified banking, consumer, legal, or fraud support when appropriate. Medical, legal, financial, employment, and safety decisions may require a qualified professional rather than personal persuasion.