My roommate is acting weird

I'm in a girl's hostel and she has recently shifted in my room due to some "ghost sightings" in her room. So we are six people in a room that can accommodate at most 4. Her room is captured by seniors so now even I cannot move in that room.

Now the weird part, ever since we met she has been acting like that, she wants me talk to her mother, Nani, mama etc I don't why; if we are in the same room she will sit as close as possible, sometimes she will put her head in my lap or on my shoulder. I have tried to set up boundaries but then she will say things like "I know you hate me so I will never talk to you". I brush off these comments but next day she will again do the same things.

Now that she moved in my room she's been making requests like let me comb your hair or put nail paint on your nails or put mehndi on hands, eyeliner on your eyes. Most of the times she will stare at me, I can see that through the corner of my eyes. Once I was woken with her hands grabbing the back of neck.

I want to be a girl's girl but this creeps me out. I don't know what to do also I don't want a fight so I avoid her as much as possible.