She knows I'm gay

I have a classmate of mine. She was the most quiet person in class and no one even dared to talk to her. She was really weird. In a way where she'd still lick the food that have fallen for a few seconds not knowing that it's contaminated with an awful amount of disease-causing germs on the food. Like oh my god. she's disgusting cause I still see her doing that inappropriate behavior in the cafeteria.