"...We all come to this place while dreaming?"

In her surprise, Margaery forgets to disguise the alarm in her voice with the dense tone of curiosity. In her haste, she tries again for clarification and ends up asking a Stupid Question, "While asleep, I presume you mean?"

Which leads to another hurried, awkward cover-up attempt: "Everyone has come through the rift while they're dreaming in their sleep?"