I need opinions. about relationship with m sister?

Dude, I know how you feel. I have had that same exact argument w/ my 16 year old sister ( Minus the unplugging). Let me tell you this, neither of you is right. Just apologize (no matter how much it kills you, and no childish "i'll apologize when you apologize) and get on with it. Oh and next time watch tv and use the laptop when she's not home.