headcannon: jo has a cool family but they’re really tied to gender rolls. Little jo wanted participate in what the male members of her family like to do (namely her father maybe?). But family said “no jo these are boy things. You’re a girl” so Jo grows up trying her best to be more like the dudes. Conceals her curves, denies she’s a girl (while still identifying as one), ect. And at some point she becomes “one of the guys” and her family just accepts her as is.