Immaturity begats paranoia. I like that.
You didnt have the cover off your comp, did you? You do realize that your computer will recieve radio waves, right? And that it send out radio waves?
Yes, you should call and talk to her you arent the only one who has thrown a phone against a wall, you know. NOT because it will keep the aliens away from you but to get yourself out of "girl trouble".
Talk to her, let her know your feelings, she may not forgive you(or even talk to you again-ever again-but dont think about that) but at least you will have tried.