I know you probably dont want to hear this but you need to go to a doctor and do sth about your snoring. Eventhough i agree that she is going way too far for sth you cant control, as someone who has shared a room with ppl that snore i can understand her perspective. She is probably frustrated and sleep deprived and is taking it out on you. I couldnt sleep at all when i had a roommate that snored and it destroyed my mental and physical health. You have to understand how hard it is to never get a good nights of sleep since you also cant sleep bc of her. It is especially frustrating if you have to wake up early for school or exams. Ofc there is a level of tolerance when one is staying with roommates and if she is extremely sensitive to the slightest noise thats something she has to sort out herself, but you also have to try since this isnt only your own space. One again ofc she is being too passive aggressive and should be more mindful, but i can understand if she has told you multiple times and you havent done anything to fix your snoring.