This room is quite the contrast from the rest of Anchor -- so much so that Rey can certainly believe that it's a holographic projection, maybe even by someone else's memories, if what this stranger says is true. And there's no reason to doubt...

"That so?" She regards the walls with suspicion, as though something sinister were etched into the panels somewhere. "You didn't look very cheery a moment ago."

A blunt thing to say to someone you just met, but Rey was never one for tact.