You didn't read the article, because just assuming X amount of money can work for anyone is not even remotely realistic.
She owes $50,000 on her credit cards. Let's assume an 18% interest rate. The minimum she could pay to actually pay off the debt (just enough to even pay the interest) would be $765 per month (54% of her income), which would take 22 years and 1 month to pay off, with $152,024 paid in interest.
She also has a $268 monthly loan payment for her aging rig. That means $1033 a month is going just to debt. And in my area, for someone getting on Medicare with no drug plan, for "original medicare", the estimated annual health and drug costs are $3,880.
So after medicare costs and debt, how much is left for housing, food, transportation, and incidentals, per month?
$60.
She's clearly going to die before she can pay her debt off, so maybe just don't pay the debt and use the $825 total to help pay for housing, food, transportation, and incidentals, all of which are higher when you don't have a residence or stable income. You won't have any credit and the creditors will try whatever they can to come after you, and maybe you can dodge them for a few years until you die.
Can you live off $825 a month? Yes. Will it be decent? Hell no. And if you have any major unexpected bills (such as emergency dental work and repairs on a rig, ballooning past $8000) you're fucked. Which, of course, happened.