See if she can recover the ID/password. Use every email address she can think of.
Apple ID - How to find your Apple An iCloud e-mail address is an Apple ID.
Apple ID - Find
For the Apple ID password, enter the Apple (iCloud) ID and click Forgot Password. See if you can get an email option if necessary.
Apple ID - Manage
Apple ID – Forgot Password
If you/she are the original owner, contact Apple. Apple can remove the ID if provided the required paperwork. Either take the device, the original purchase receipt with the serial number, and a photo ID to the nearest Apple Store (if it has reopened)
Genius Bar Reservation and Apple Support Options - Apple.
or contact Apple ID Support.
Apple ID - Official Apple Support.
Contact Apple for help with Apple ID account security - Apple Support. (Link doesn’t always load)
Get Support https://getsupport.apple.com Work through the screens to get a chat option.
Apple Support schedule phone call
https://twitter.com/AppleSupport People have posted it may take an hour or more to get a response.