At the moment, Snap doesn't provide a specific option to show who rewatched your story. But you could keep an eye on any potential updates from Snap that might offer this functionality.
Sorry, I don't think there's a direct way to see who rewatched your Snap story. Maybe Snap will add this feature in the future.
There's no built-in way to know for sure who rewatched your Snap story. It's something Snap might consider adding later on, but for now, you're out of luck.