Emma: "I don't have a mom. It's just me and Quirrell and a bunch of dead animals."
Norma: "That is very sad. You are very sad. You are dying."
Emma: "Yeah, I guess my mom couldn't handle it?"
Norma: "That sucks! It's my favorite thing about you, for what it's worth."
Emma jumps on her, for no reason other than Norma is being sweet and has the charisma of a cult leader, and because for a second Norma's narcissism parted to let a little empathy through, and because she's having a tough fucking day, and because her aim is to have Norma on her side as her future mother-in-law.
And again, you have this moment of Farmiga magic where Norma is first totally grossed out that somebody is hugging her, and then realizing that she better make this work because their entire futures right now depend on giving Emma a false sense of inclusion and achievement, and then... She relaxes into it. Wraps her arms around the tiny girl, and just hugs the shit out of her. Even Norman is amazed.
These two sad broken individuals who get to think Emma is the weaker one, who needs their love and their support, and you have Norman who honestly is just trying to do right by her -- even as wedding bells are going off in his crazy head with Bradley -- and then Norma who's like, "It's no skin off my ass. Ten years max, and then I get him back." And still, the very period at the end of the sentence is relief: Emma's a girl, a broken thing, which -- just like she only trusts men when they throw her up against the wall -- paradoxically makes her the only person from whom Norma Bates can accept comfort.
She hilariously hammers Emma into the car with a repeated mantra -- "We will, honey, we'll go to the cops tomorrow, tomorrow okay, tomorrow" -- and they see her off, and then the Bateses reconvene to watch her drive away.
Norman: "That was nothing short of amazing, what you did there. The real parts and the fake parts. You are a complicated, wonderful creature."
Norma: "My ass we're going to the cops. Where do you find these people?"
Norman: "Both because it's dangerous and because I am viciously jealous, I'm going to ask you not to tart yourself up and go back to Camp Shelby. You can't ever go back there."
Norma: "I'll swing by, try to avoid having humiliating sex if at all possible, or at least refrain from vomiting on him if that's what goes down, grab the belt, drop off a turkey pot pie, and then we'll fry his ass."