What a horrible situation skippy you must be so worried.
Working in a shop on your own (if thats the case) is not a job for a lady of that age as in the times we live in it can be a dangerous occupation.
Many years ago I used to help out at an older persons day centre which used to be such fun as it was a sociable place with so much to do like bingo, sewing, knitting, games, etc and they were all fed lunch. As I said this was a long time ago and was social services run, might be worth checking out if they still have things like this in your area?
It also sounds like she is being exploited in terms of wages by the owner and surely she could manage without, or maybe she is entitled to some extra benefit she isn't claiming for at present or doesn't know about.
Surely the shop owner is negligent in not training her and not displaying signs with age limits for alcohol, cigs and knives?
Good luck in sorting this out and give her an extra hug on mothers day
Emma x
Be positive & look after yourself, there are more important things in life than debts....
Best Wishes
Emma x