Inside, Elizabeth makes Peter sit at a desk while she goes to talk to Walter. Peter stares at the "Olivia" sign over her cubby in a row of them, and them picks up her sketchbook and starts flipping through it, much in the same way Elizabeth is going through papers on the desk in Walter's office. Peter sees a drawing of a big angry man, the kind of drawing an adult does to appear to have been drawn by a child who is -- well, who is much younger than Olive actually is. There's also a picture of a field of white tulips. Peter looks at it for a moment. My theory: they don't have impressionists in Earth-2.
Anyway, Walter comes into his office. I guess his "looking for a missing girl" outfit is the three-piece suit he's wearing here. They haven't found her, and Elizabeth seems in no way embarrassed to be caught reading Walter's papers, but she picks out the fact that Walter thinks her stepfather's hitting her: "William, I believe the ideal environment for transition across universes may be a return to her home. The unique combination of love and terror there apparently stimulates a cortical reaction." Walter says, "A, they are notes, and B, yes." It can be really frustrating to argue/debate with a person who calmly lists off points like that. Just ask my wife. Anyway, Walter and his mulletshag start talking about Olivia returning to her home to "restimulate the pathways" and Elizabeth is all, "What, you mean to be terrorized again?" You know, I can't look too long into Elizabeth's big eyes and hair cascade without losing focus. I imagine I'd lose every argument with her. She's not buying Walter's point that it would take him years to simulate the state artificially; she thinks that there's got to be some other way. He tells her it's not just about him and her and Peter: "I crept over in the night, and I stole their child. If we don't return him, they'll figure it out, and they'll come after him. After us. I know, because that's what I would do." Elizabeth wants to know if he would sacrifice Olivia for Peter, and he says he wouldn't (shit, it's not even their Peter). "But for thousands of others ... or millions, it would have to be considered." Elizabeth is aghast. Remind me never to travel to another universe to abduct a parallel version of my daughter if the one we have dies, because this appears to be a terrible strain on a marriage.