Should I just delete my facebook?

My mom is wayyyy too over protective when it comes to facebook. I've been grounded three times since April because of it. I'd understand if it was something genuinely bad, but there hasnt been anything bad on my facebook. The first time, my friend posted a song on my wall that we had heard at a school dance. It may be a bit inappropriate, being it a rap song of today about clubs with a curse word or two, but it's nothing I wouldn't hear all the time anyways. My mom saw it and flipped out. No computer for two weeks. The second time a friend tagged me in a post about walking from her house to a friend's house. It was a 15 minute walk over no busy streets (almost all back ways over gr). My mom was convinced I would have gotten hurt and I wasnt allowed out for three weeks. Just this morning, I posted a link to my cousin's wall of a joke. It was titled about bikinis but it was really just a prank someone did on Chatroulette ( a href="http://www.youtube.com/watch?v=DSArz0T3H3w&feature=player_embedded" rel="nofollow"http://www.youtube.com/watch?v=DSArz0T3H…/a ). She's at work so I dont know if she's actually watched it. I'm a fourteen year old girl who is going into the ninth grade and I am exposed to this stuff anyways. My mom is trying too hard to shelter me and every time she freaks out on facebook she embarres me in front of my friends when really what I've done wasnt all too bad. I dont take inappropriate pictures, I dont curse (real life and online), I don't have . I'm not as bad as she thinks I am and I dont feel that I need to be punished for these. What do you think?