That cross necklace
Ah yes, her platinum cross necklace that somehow doesn't clash with her 24k gold balls (you didn't think she'd settle for brass balls, did you?). With all the other prep school girls adorned in Cartier and Tiffany's, what better way to stand out than with that iconic cross necklace full of cocaine? It was a dick move of the headmaster to dump it out when the rest of Kathryn's classmates were probably jacked up on Adderall, which is pretty much the same thing, only legal.