Hi,
It is of utmost importance that your Aadhaar Card is updated to avoid any obstacles that arise, such as this one. To access the bank accounts you will need to make correction in the Aadhaar card.
You can update/change the demographic details on your Aadhaar card online anytime-anywhere through the official UIDAI website. However, your mobile number should be linked with your Aadhaar card to make the changes online. As per the latest developments, you can get minor changes such as your name, date of birth, address, gender and language changed in your Aadhaar card online through the official UIDAI website. However, there is a limit on the number of times you can make a correction on your Aadhaar.
You can also choose to visit the nearest Aadhar enrolment center and apply for correction in name in your mother's Aadhar card. You will need to provide requisite documents as proof while applying for the correction.
I hope this answers your question.
Have a good day!