How can I get my Mum to stop stalking me?

Right, so a year ago my mum found 'indecent' things in my computer history. This made her totally flip, and now she's blocked half the internet, made an administrator's account, so now whenever I want to do the slightest thing, I have to get her to put her password in. Now she's getting really annoyed cause I'm always asking her to confirm actions I do on my laptop. It's really annoyed me aswell, because I used to have Sims 2 and Sims 3 on my laptop. Ever since she added all this blocking, I haven't been able to get on either of the games and now my laptop won't read them. Please help?!