First off, congrats; I learned two new words because of you(paracosm and diegetic). Second of all, I love that pretty much all the Isabela headcanons can be summed up by: Isabela is actually a little weirdo. I also really like the headcanon that she shows affection by headbutting, that's adorable and, for me, relatable. Third: headcanon: Isabela sneaks out at night to walk in the jungle because there's no way she could do so during the day and she loves night-blooming flowers(esp. cereus!)
Isabela gives off lil weirdo vibes!! And i'm projecting! In all honesfy, i didn't know affection via headbutting wasn't a common thing until i posted the hc? Like its just something ive been doing so long that it had never occured to me that other people dont do it.
Its just a fun low energy way to show my affection!