"You've been here longer than I." She started, wondering, "has anyone tried to go to the edge? Is there an edge? Is this just a fish bowl?"
It was a valid question, she thought. And the more she thought about it the more she wondered if someone ought to. They'd have to wait until it was warmer, of course... "Am I distracting you from something? I am. You're distracted." The last part wasn't so much a question, as a statement of fact.