Pets are a tough one for sure, especially if it is just you and the dog.... I would hate to lose my little mutt.... I have lost 4 pets in my lifetime and they all were my friends and companions. Each one was a very tough loss...tough as losing a human love one. Prognosis I hope is good, because chemo can be painful... Sell the car....but do the right thing for your friend as you would want them to do for you...