I agree with what Steph said earlier.
She sounds depressed and is using alcohol and the computers to get out of it. She also sounds somewhat hostile. I have been in this exact situation myself (except for the living situation, I paid rent to my roommate), and nothing anyone said helped me. Only time and hitting a lower bottom with alcohol/substances helped me, actually. I had to quit the substances, including smoking, plus got on the right psych meds, to pull me out of depression. But I was still down until I finally got busy working again.
In my experience, this is going to take her a long time and she needs to do it herself. My best advice to you is to lock up your alcohol, protect your computer info, and stick to the 2 month deadline. This is a matter of getting through it.
Please don't extend the 2 months even if she gets better, worse, or stays the same. You are powerless over her; only she can change her own life. The situation she is in has taken a lifetime to create, and your words or actions can't really change the tide -- to repeat, only she can change. I hope that makes some sense and I don't sound too heartless. If she is drinking I agree AA would be a great place to start, IF she takes the program to heart... most people don't, they discard the help available at AA and go on digging themselves deeper in a hole.
Really, my heart goes out to you and I am hoping this time goes without too much negative consequence to all of you.