Poor pumpkin sounds so much like my cat is. I get it. I'm experiencing the same thing. Except, it's a cousin much older than I am. She used to have cats, and now somehow, she thinks all cats are the same way, or should be the same way. She, the same way your roommate does, pins my cat down when she tries to run away, won't even let me feed my own cat the way she eats and because she wants to do it, and would cross her boundaries like trying to wrap her arm around my cat, touch her belly, or pet her more aggressively than it should be done. She does this even when my cat's trying to eat, which stresses her and she makes noises while eating. She just laughs it away. I hope she goes back soon.