Hi! I'm sorry to hear that your mother's Facebook account got häçked. Here are some steps that you can take to try and recover the account:
1. Go to Facebook's login page and click on "Forgot Password?"
2. Enter your mother's email or phone number associated with the account and click on "Search".
3. Facebook will then give you options to reset the password, either through email or by sending a code to the phone number on file.
4. If your mother no longer has access to the email address or phone number associated with the account, click on the "No longer have access to these?" link.
5. Facebook will then ask for a new contact email address or phone number to send a verification code to.
6. Once your mother enters the verification code, she should be able to reset her password and regain access to her account.
If the email domain @datadudi.com has been häçked as well, it's important to contact the email provider to report the issue and recover access to the account. They may also have ways to reset the password and regain control of the account.
In addition to this, it's always a good idea to enable two-factor authentication on your mother's Facebook account and any other accounts that she has to add an extra layer of security to her logins.