Keep the message proportionate
Use the shortest explanation that still tells the truth about the event, impact, and current position. For a message about how to invite estranged family to a goodbye gathering, use this factual base: give the event, date, location, relevant history, and what kind of contact the invitation involves.
Give timing that can be trusted
Give a realistic date, a simple option, or a direct yes-or-no question and avoid vague promises such as soon. Offer a simple way to accept, decline, ask a practical question, or choose a lower-contact option. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Close the loop without drama
Do not announce their attendance, use relatives to persuade them, or make a public gesture before they agree. Respect no-contact, venue safety, custody, and legal restrictions even when the event feels important. A calm ending is more credible than a warning, a grand gesture, or language designed to provoke a response.