Erimentha immediately shades Mrs Barton (Kimberly and Ella's mum) for appearing to be falsely friendly with her mum on arrival. She also judges her for wearing silk, but spares the grown ups with, "Did you know [silkworm cruelty]?"
Nathan is discarded downstairs and the girls go towards Kimberly's room. Erimentha does everything possible to be awkward - wondering how they keep the cream carpets so clean because Kimberly's pumps are leaving a damp trail, and Erimentha outright asks if her mum allows her to wear shoes upstairs. "Who are you, her mum?" says Beth, which to be fair, is appropriate to ask - it's not her house.
Erimentha talks about Kimberly's cold, pale irises again, probably because she plans to store them in a jar in future. I'm unsure which aesthetic this fits into.
Erimentha continues to be judgy, internally criticising Kimberly's dirty shoes, messy room, that she has far more makeup than is age appropriate. Kimberly starts putting lipstick on and our fair lady just cannot contain herself. "You know, most lipsticks are made from whale blubber?" and is 'ready to recount the unethical history of the cosmetics industry' when Kimberly puts her in her place, "No facts at my house, Erimentha"
That was fair game considering Erimentha has been snobby, insulting and rude since arrival.
She draws on Erimentha's cheek with the lipstick and takes a photo. Erimentha pipes up that she has not given consent for the photo to be shared, and that they're breaking the law by being on social media under the age of 13. Every party has it's pooper (although Erimentha has probably evolved beyond ordinary human capabilities and no longer passes stool)
What happens next is one of them cuts a chunk of her hair to make a Voodoo doll. Erimentha, who could not be more insufferable at this point, states that Voodoo does not work and the dolls are only sold as part of tourism. [Ed: Actually, Rube, it's a common misconception that Voodoo dolls are related to Haitan or Louisiana voodoo]
She remembers she has a brother and goes downstairs to find him, presumably to use him as a human shield. She joins Ella (Kimberly's sister) on the sofa with a book