The train is quiet - but something lingers.

Across the aisle, someone you don’t know has been holding a letter for several stops. Still sealed. They haven’t looked at you. Haven’t opened it. But they keep turning it over in their hands, like they’re unsure. You’ll be getting off soon, maybe before they do. You won’t see them again.

Do you say anything?
And if so, what makes you speak… or stay silent?