dude, thats completely harsh.
My mom has never cracked down on me like that. I mean I wasn't the best kid in highschool, sure I got good grades but I smoked alot of dope and experimented with some pretty stong lsd in my senior year, but me and my mom (and dad) always had this mutual respect thing going: that is they respected my freedom of choice and expression and I respected thier advice and help keeping me in line so I didn't fuck up my life.
If your mom is tripping out because you can't sleep then thats wierd. maybe try leaving home for a week or so and see how it gos. If she freaks out completely maybe its time to think about your life. If she comes around and wants to talk to you like an adult then go for it.
oh yeah, how old are you?