How to raise money for a friend?

My friend and her disabled mother live in a run down, trashy, moldy, old double wide. They pay and pay and pay so much money, they try so hard to make things better, but the place is just... it needs condemned! there's mold, broken parts of the floor where if you step in the spot, you will sink like 2 feet into the floor, the ceiling leaks, the plumbing is sucky at best, they have no hot water, is just horrible!

I feel so bad for them. My friend has high blood pressure, can't sleep, and has been having panic attacks, all from the stress of this trailer that they are stuck in, The have no savings, and every time they manage to get some savings going, something in the trailer breaks and they have to fix it. My friends is only 18, and she works like 6 days a week along with going to school, and she still can't get all the bills paid. They haven't gone grocery shopping in three weeks because they can't pay for it- and they are already on assistance...

I'm a full time student, but I want to do something so bad. My other friends and I would love to raise like, 3 or 4 thousand to buy a small single wide to give them. We want to tear down the double-wide and give them a new single wide trailer they can hook up to their land. (the land is great btw, it's just their trailer.) How can we raise enough money together. There are zero jobs up here that will hire me with the few hours i am out of school... so help, please!?