"Wow. All those times we've fought them off in my universe, and in yours it just gets blown up? That's harsh." And disturbing, especially with the Satan being excited about it thing, even if he knows it's definitely not his world - because he was a Time Agent, and he knows how the timeline goes.
"So, the President was the good guy, right? And you were his friend?"
Just trying to get an angle, here, on whether this girl, charming as she is, is likely to be a threat here in the dome.