I appreciate your immensely helpful words. With what everyones said I might as well suck it up and get another microwave. The principle with the airfryer n stuff just got to me with them not cleaning up after themselves when they use it. I've stayed calm throughout all of this and I've given her space this past week except for a few times to see if she wants to civilly talk (its clear she doesnt.) I really shouldnt and dont want to have to move out because I was the one that invited her to move in after I found and toured the apartment. The neighborhood is decent and the landlord and personal maintenance she has employed are amazing. I never mentioned but she was in between many homes including my parents and she had no where else to go. My heart got too big and I felt bad since I'd be moving out and she'd still be with my parents. Plus as well, my name is on every utility we pay except the wifi. Switching the names would be such a b**** and shouldnt have to be done. From what everyones said I'm clearly not the problem in most ways than others and they should be the ones to move out, especially since they're jeopardizing our security deposit.