She thinks I am staying up for days on end on purpose and gets really mad at me for it. My sister is also bulimic and my mother thinks she has control over that as well. How do I explain to her I can't help it? I have already tried arguing with her to the point of having a migraine afterward, (and I very rarely get mad as it is). And don't give me any answers like "go to a sleep therapist" or anything, please.