[His eyes widen as her words sink in, but he doesn't want to believe it. The smallest and seemingly the meekest of them have the key? There's no way out? His mind is making some connections, like the hidden conspiracy theorist he never remembers being.]

Rio... are you saying you're... [It's hard to say, but it must be harder for Ellie, who's been with Rio the longest.] You're not saying you're with those people, right? The ones who brought us here?