Choose the right purpose for the message
Decide whether the message is meant to inform, apologize, ask, support, or close a practical loop. For a message about how to tell a child their parents are divorcing, use this factual base: state the child's schedule, health, school, expense, or behavior and distinguish observation from interpretation.
Use detail that helps a decision
Include the smallest set of details that lets the recipient understand the impact and choose a response. Propose a child-focused plan, a response date, and the documented route for unresolved decisions. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Know what the message cannot achieve
Do not use the child as messenger, trade access for agreement, or criticize the other parent to the child. Follow custody orders and use safeguarding, legal, medical, or emergency support for risk to a child. The message can offer clarity, but it cannot guarantee forgiveness, agreement, attention, or renewed contact.