I based Hanna's dorm room on the former George Washington residence hall at E 23rd street. I never lived in one of those pods, but I spent enough time crowding onto fellow SVA students' beds to watch laptop videos, then clearing out before 11 PM. Years ago, Raina Telgemeier had an accurate depiction of life in these narrow walls, saving every precious cent for (the also-former) Frank's Pizza.
More than anyone in OP, Marigold expresses facets of her identity through radical hairstyle changes, accessories and makeup. Hanna's hedgehog head, like much of her personal style, feels effortless by comparison, and this will always be something of a divide between them. It's not until much later, when they've stopped being friends, that Hanna feels the least bit self-conscious wading into Marigold's world.