How do you wean a friend off of World of Warcraft?

[ryjlog]

The girlfriend of my roomate has made World of Warcraft her life!! She doesn't have internet at her house, so her computer is over here. I burnt out on the game, and my roomate plays it whenever she does. We try to start drinking, play board games, watch movies, but whenever we ask her to get off, she snarls and yells and acts pissy until she finds a reason to quit and get back on the computer. Tonight, she stood me up when we were supposed to go to King Kong, sitting right in front of me, didn't say a word. She doesn't want to dissapoint her new 'online' friends, little does she know she's losing her. We confront her all the time to no avail. This is getting EXTREME! What should we do?