i hate my roommate's snacks

so like i know its not cool but im kinda a snack hoarder and i got this one package of doritos that i really wanted to keep all 4 me. but roomy took it last week when i was napping in the middle of finals week cuz i was stressed af. now i can barely look at her, like im so annoyed about it. we had this big fight about snacks being communal and stuff but seriously i dont wanna share them anymore.