College roomate etiquette.

So no one likes to have a second mom on campus, nagging you about what you're doing wrong with your life, how watching CSI instead of getting through your chemistry homework faster is going to ruin your college career, giving you "you're going to regret this" and "I would never" eyes when you take an afternoon nap. Especially if your second mom happens to be your roomate. It's just rediculous when people around you make things SO much bigger than they are or should be...for instance, taking the occasional nap after a dayful of classes. Hey, if I have the free time, I'm going to sleep for two hours. Anyway, my roomie says she appreciates the fact that I get most of my work done at night (she's even reminded me how hard it was to go to sleep at 11 pm through my typing - but she's worked through it, for my sake) but she's constantly berating me about staying up till 1 studying or watching TV instead of cracking open my lab notes like I should be doing ("Didn't you say you were going to the library?") and not always with words, either. It's mostly in her tone or her physical attitude, when she asks what I'm doing (crocheting a scarf, reading Harry Potter), as she make it blatant that she's homeworking away (furiously highlighting some gigantic textbook, regally announcing her depature to the library for that accounting study group). A little rediculous? A little overbearing? Way to mom-ish (when we were only best friends last year)? I think so.