Start with the part that is verifiable
Separate the event you can describe from the motive or reaction you are guessing. For a message about how to support someone after a fatal accident, use this factual base: acknowledge the death and the relationship while repeating only facts the bereaved person has chosen to share.
Make one answerable request
Give the recipient one concrete question or next step instead of several emotional jobs at once. Offer specific practical presence, remember important dates, and let the person set the pace. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Leave the recipient in control
Do not ask how it happened, assign blame, use stigmatizing language, or turn the death into a lesson. Use trauma-informed crisis, bereavement, emergency, or professional support when someone may be in immediate danger. A clear message remains useful even when the answer is no or no answer arrives.