New furnace help

I’m the father of four. My wife left us a year ago. I work in the social services and have struggled to keep things together. My second child Whitney is severely disabled and I built my house 20+ years ago to adapt for her. My furnace went out and I was informed that I have to buy a new furnace which I don’t have the means to get it. One of Whitney’s issues is Reynauds syndrome which her blood reacts to cold and she gets horrible blood blisters on her feet and hands. I’m asking for help in getting a new furnace so that she doesn’t suffer. Thank you for your consideration in this matter. I promise to pay it forward. An 80 % efficient furnace is around 2200.00 dollars.  Thanks