Hey Brenda
Lots of good advice presented from others with wisdom and kindness but here I go...
a redneck woman from coal country...
Get some meat on your bones and walk away
Tight budget? Eat mac'and cheese
This family has shown no negligence and paid for others to care for this lady. Let them figure stuff out instead of you.
Don't waste your recovery energy on this situation anymore.
Just do a good job without emotional attachment or quit. The lady will be fine until replacement of you
Fix your stuff at the foremost. Stay sober and strong. Fight your demons because they will not let up till you die. Analysis is done.