Gosh, that sucks that she's so over protective. My parents aren't nearly that bad but that could just be because I never really push the limits because I understand and agree with the limits they put.
They know all my friends and trust that, if I ever got into a compromising situation (like having something to do with smoking, drugs, alcohol....) they know I'll make the right decision. They accept they can't prevent me if I were really bent on doing something but if they inform me, they hope I'll mkae the right decision. The last time I went to a party with alcohol my mum told me to eat lots and recommended I just drink shandies because I'm small and have a low alcohol tolerance. And my Dad said we doesn't care whether I get drunk, as long as I do it in a safe place with people I know.
I call to tell what I'm going and with who. I know that all they really want is to know and it's no trouble to keep them informed, I reckon.
My sister was a real handful though. She used to go to parties and all that. Whenever she'd complain to our parents when they wouldn't let her go she'd say "But everyone else is going!". My parents eventually took up ringing around all her friends and their parents to see who was actually going. She really didn't like that...heh.