Save Michelels Oxygen

My mum needs oxygen tanks to breath. Even when she's sleeping, her machine needs to be on. She has been having chest pains for a few months, but the doctors can't figure out whats wrong with her. My mum, Michele, went to the hospital a month ago when it got too bad. She was set up with a oxygen company that our insurance won't cover. We have to pay for the tanks she has already used, but thats not the worst problem. Mum uses 10 tanks a week, for work. The new company will only give her 4 tanks a month. Mum works with mentally disabled adults, they can't function without her. Our house has 7 people; my mum, step-dad, me, and my 4 younger siblings. My step-dad works at Walmart, he doesn't make enough money to support us and the extra cost for the used tanks. Mum can still work if we buy a portable machine to use instead of the oxygen tanks. Please help us, our family has enough problems. I was just diagnosed with Tourettes, my younger brother has autism, and the youngest has Epidermolysis Bullosa. We are already tight on money. Please.