Carrie realizes that she's the only person sober or caring enough to help Larissa. But her way of "helping" is to lamely follow Larissa all the way up to the roof, Larissa telling Carrie she wants to fly and be free. Larissa is on the edge of the roof, and Carrie tries to help by yelling "no." But at least she's sort of keeping someone from killing themselves at their own Halloween party. Does Larissa have any real friends?
Back in Connecticut, Tom is scaring kids with his wookie costume, and Dorrit is eating all the candy, watching Poltergeist and sass-mouthing her dad.
Carrie somehow managed to keep Larissa from jumping, and now has her set up in her bed (this was in her house or apartment?). Larissa talks about the quote, "no man is an island," and notes, however briefly, that everyone in Manhattan is an island. It is a sad and very real moment for Larissa, who has no friends except this high school senior who thought she would put a piece of construction paper on her tongue. Carrie thinks it's wonderful that everyone gets to be their own island because then she wouldn't have to run into Sebastian wahhhhhhh. Way to relate your high school problems to real, adult problems, Carrie.
"It's exhausting being fabulous," Larissa tells Carrie, all sweaty, still wearing novelty eyelashes. Larissa says she doesn't want to be an island anymore, that she wants to be a bird, which is somehow different? Carrie notices that everything she admired about life in New York was misery-making. Lady Di has some things to think about.
Meanwhile, downstairs, or however the layout of this party works, Walt and Bennett are talking about Janice Dickinson and how pretentious someone can be if they just live in New York. Bennett encourages Walt to "take the leap, what's the worst that could happen?" City people love to speak vaguely.