Roommate

So this is kind of a lame question but my roommate is awful! She acts like she doesnt know me in public, wakes me up all the time when im sound asleep just to read her homework, she took over our entire room and i no longer have any space in our dorm except for my top bunk. Her friends are my ex friends and she allows them to come in a trash my bed even though Ive told her to stop. She uses my bowls and doesnt wash them to the point I have to throw them away. Thats just the half of it and shes really terrible. I have one week left and im leaving this awful school and going back home

But I wonder if I should get her a christmas gift? Our other roommate (who i love) is getting both of us something and I highly doubt my devil roommate is planning on getting either of us something..

I dont know whether I should get her a gift or give myself a gift by blocking her the moment I leave this school?

Ps: my mom thinks I should be the bigger person but I've just about had enough

Update: im pretty sure she put a tack in my bed because i found one of the gray tacks she uses on the top of my bed when i moved the blanket that was obviously not there this morning when i woke up. Psycho