Not a ton, I know, but it would be a start :)
If you're interested, my e-mail is in my profile.
(Note: you don't have to be in NYC, just have an internet connection)
To be honest, your $20K loan sounds like an error. Alumni like myself do not donate back to Stanford so that things like this happen.
EDIT: Added the final paragraph.
It's amazing to me to think that was 15 years ago because life has a funny way of going on. One of the most valuable traits you have already discovered, due to your battle with cancer, is your resilience. You will adapt, learn, and grow from your experiences.
Here is how I found my way out of the situation: with the help of my family, I transferred to a public college, worlds (but only blocks) away from where I was previously. I re-invented myself enough to succeed and have a meaningful career thus far and continue dreaming for better.
I recommend that you apply to a school like this, one with a somewhat decent computer science program, but one you can handle and possibly work a job to keep your debt low. Be the best student there and rebuild your confidence. Graduate and get on with life. Most importantly, do not look back with regret because each decision you made was simply a step to where you are now and only a step towards where you will be tomorrow.
For what it's worth, I'll tell you that sometimes, hitting "rock bottom" can be good for you. I bet you're pretty motivated now not to go further in debt, and not to waste your next opportunity! Lucky for you that you get to start over at such a young age. Find a way to dig yourself out of this hole.
I know it can be tough, but suck it up (in terms of the family situation). And while you're there, take some of the remote gigs that I see the HNers here offering to give you. Until you can stand on your own two feet, and then you have to leave and remove yourself from abusive relationships (which it sounds like from what you wrote). But until you can do that safely, you're just shooting yourself in the foot.
> It's the best university in the world
Source?