You didn't ask, but I do suggest that your bank should not allow the account to continue to appear as a joint account. Leaving the decedent's name in the account styling can lead to confusion that might result in a teller's acceptance of a jointly payable check (names conjoined by "and" or "&") or a check payable to the deceased for deposit to the account.
After a reasonable period (I suggest 30 days or less) after a joint owner's death, the bank should contact the surviving owner(s) to arrange for updating the account, to include dropping the deceased's name and, if applicable, updating the SSN used for interest reporting. If there are any recurring direct deposits to or direct debits from the account, check to see if any of them should be terminated/returned.
John S. Burnett
Fighting for Compliance since 1976
Bankers' Threads User #8