Procrastination

So I still haven't started this paper that was due last semester. I did get an extension until January, but that was a couple of months ago. I've dropped a few emails to the prof, along with a voicemail, but I haven't heard back from her in over a month. My question is: What are my responsibilities now? I've made a good faith effort to meet with the professor, with no response, so is the paper now due whenever I feel like handing it in? Do I have to keep trying to contact her? What's the protocol?

Side question: will I ever hand it in unless I get another deadline?
Answer: unlikely

Double side question: Is this indicative of my future complete failure at a firm?
Answer: very likely