Name the impact without exaggerating it
Describe who had to wait, worry, redo work, spend money, or make a choice with incomplete information. For a message about how to ask family to stop asking about children, use this factual base: identify the visit, topic, money, photo, event, care task, or comment that needs a limit.
Make repair practical
Offer the repair you can actually complete, with ownership, timing, and any limit stated honestly. State what is allowed, what is not, and how you will respond consistently. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Let future behavior carry the proof
Do not threaten access to children or elders as punishment, and do not debate the entire family history. Use safeguarding, legal, domestic abuse, or emergency support where safety, custody, or coercive control is involved. A promise inside a message is weaker than a visible change in what you do after it.