Hey Tmac
You sound like a nice kid, here's some advice, time to be a man starting now,(assuming you're a guy ) help your mom out and go door to door to door and ask people if they need small work done around the house.
I bet you could make 100 bucks a week tax free. That's 400 a month for the mortgage.
Some will slam the door in your face but some will amaze you with their generosity and it may lead to things later on down the road, like a good well paying job. Life is about networking.
Your mom has done her best to get you this far now get out there and help her, I guarantee she'll be proud.
If she loses the house you go down fighting and proud
I see you have Patton in your sig, what do you think he would have done in your position?
Good luck Tmac!
<S> mk