No one can really answer that. We do not know your mother and your person story with them. No one can answer this except your mother.
Ask her.
The estate of the deceased is responsible for the debt.
No go see a lawyer.
No. Only the account holder is responsible for repayment of debt incurred on a credit card. An authorized user is not responsible for repayment, but in this case if the now deceased AU continued to use the account after the death of her mother (the account holder), the AU's estate might be responsible for any charges made under such circumstances. In any event, the surviving spouse is NOT responsible to repay the CC debt.
My father is deceased my mother used quitclaim deed to sell property what about the kids do fathers interest pass to kids
The estate of the deceased is responsible for the debts. Your mother will indirectly have to resolve the debts before the assets are released.
Do you have to pay taxes on deceased mother's house when it sells
Your mother's estate is responsible. If you signed the paperwork on some items, you could be held responsible.
The estate is responsible to pay outstanding debt before being distributed to the heirs.
If you were not listed as a joint account holder you are not responsible for the debt.
Condolences for your loss. To answer your question, not only no, but hell no! Unless you were a joint account holder, you have no liability for your deceased mother.
None until granted them by a court. see links
Typically they are no responsible. However, the estate has to resolve it before making a distribution.