Hyacinth doesn’t ID as nonbinary — she’s still a girl — her gender just comes with this meme attached.
Hazel: So, um, do you still want me to call you a girl? I don’t think you ever said it. I just assumed.
Hyacinth: Yeah, it’s fine. I mean . . . I don’t connect a lot with gender stuff. We’ve just talked about at least five other things that are a bigger deal in my life, you know?
But I’ve seen what it’s like for someone to hate being a girl. And I don’t have that. So, sure, I’m a girl.
Hazel (thinking): Hyacinth is so cool about everything . . . I love —
Hazel: — Oh! You bought the skull!
Hyacinth: Uh-huh! For you, if you want it.
If our parents can support us doing things that remodel our actual bones . . . then yours can cope with you keeping around a few critter bones for decoration.