i ugly laughed over her making fun of his sandals and wanting the ceremony to be over and literally giving him the finger. she's SUCH a great little sister. they just have that fun dynamic and clearly love one another to the moon and back, but she does NOT care about him being king at all (i also that he's such a softboy king and an absolute DORK who is just good at being theatrical and commanding). i can just imagine the endless amount of in-jokes they've got. sometimes, someone slips up and accidentally sends t'challa a message instead of the gc and he's like "?????????????????????????? what is happening????"