Make room for the other version
Ask what the other person understood before assuming that you are arguing about the same facts. For a message about how to support someone after a panic attack, use this factual base: reflect what the person has told you, any immediate concern, and the practical context without diagnosing them.
Correct the record precisely
Correct only what you can support, acknowledge any real impact, and propose a practical way to prevent repetition. Offer one manageable form of support and ask directly about safety when you have a serious reason to worry. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Agree on a testable next step
Do not shame, threaten, promise secrecy about imminent danger, or make yourself the only source of help. If someone may harm themselves or another person, contact local emergency or crisis services and a trusted nearby person now. Do not recruit an audience, publish private evidence, or turn a misunderstanding into a campaign about character.