oh that's good to know about school! mielle was borderline A Bit Much in high school in that she was fairly popular and well-liked but was definitely considered the weird one of her friend group by virtue of being super artsy. she leaned on that a lot to be ~different~ and was 100% listening to a lot of warped tour emo-lite monstrosities. oh, and she was dating sargent for most of their last two years of school, which i'm sure brooke would've been aware of and only needs mentioning because they're now stepsiblings (??) and that's a point of poking fun among the family and their closer friends. anyway, i think they would've immediately gotten along pretty well and probably still do since they're both creatively minded and ended up in art/design careers (though different fields), and mielle is all about change too. brooke will probably be one of the first people she hits up with weird ideas of stuff to do whenever she's feeling bored.