You speak up, silly. It is clear that you try to avoid confrontation at all costs. Living with another person (whether a college roommate or a spouse) requires conversation, accommodation, and compromise. If your roommate doesn't realize that slamming her drawers around wakes you up, then it is YOU, not her, that is at fault. Negotiate some house rules about hours for quiet and lights out -- just as you would about housekeeping and overnight guests. Let her know that she's being too loud in the wee hours. Talk about what is reasonable behavior and what can work for both of you.