What he's saying doesn't make a whole lot of sense; Her name certainly isn't Steven and as far as she knew, no one had ever claimed the title and shield but her. And she does know him, and she has no reason to pretend otherwise.

"What do you mean by 'alternate universe'?" Steph is vaguely familiar with the concept of the nine realms, thanks to a quick crash course with Thor, but that doesn't quite explain things either.