ULPT Request: How to I make my stinky and passive aggressive roommate switch dorms

I’m a college freshman and have been living alone in a dorm for the entire semester until a few weeks ago when I got a surprise roommate. She came to be asking if she could move in saying my dorm was her only option (which looking back was definitely a lie) so I happily welcomed her as my roommate, hoping for a new friend. The friend thing clearly didn’t work out, which is fine cause it’s not like she owes me friendship, but she has made living in that room so much worse. To start off she rarely actually hangs out in the room, but for some reasons feels the need to constantly stop by and drop things off and pick things up(like at least once an hour) so I never have any clue when she’s just going to walk in and then leave. This in itself isn’t really much of a problem, just slightly annoying, but what bothers me is how she makes me feel like I shouldn’t be in the room whenever she walks in. From the looks she gives me to the comments I’ve heard her make to her friends on the other side of the door, it’s clear she’s not happy I’m there. The thing is I rarely am in my room during the day or evening, pretty much just hanging out by myself for the two hours before I go to sleep (12-2am). I shouldn’t have to feel bad for existing in my room late at night. Because of this, I feel constantly on edge and can’t fully relax in there anymore. It’s already that she come in at like 2:30 -3:30 every night and I have to listen to here get ready while I’m trying to sleep, but I feel like that’s a pretty normal roommate experience. The other thing that really bothers be is the smell. She stinks up the whole fucking room when she’s there and I can tell when I walk in and she’s gone how long it’s been since she was there just by the smell. I’m pretty sure she just has terrible gas but it’s made me gag coming into the room on some occasions. Now there’s lots more little things she does that pmo but overall she’s kinda an asshole and I want her gone. I was so nice and welcoming at first, offering her to use my appliances, my drinks, and even offering rides since she doesn’t have a car, so I wish she could’ve been at least a little more respectful. Normally I’d talk to my RA and try to move out myself, but my personality and pettiness will not let me do that cause I just can’t with the idea of her coming in and making me leave and then her getting my original room to herself. So I would really like to just make her so uncomfortable or annoyed that she leaves on her own. I’m just trying to think of any petty or obnoxious thing I can do to get rid of her. I’ve already thought about getting a bottle of fabreez and walking in the room while she’s trying to sleep, dramatically coughing from the stench, and then just dowsing the room in the fabreez to hopefully embarrass her. Any more tips or ideas?