Forgot both Apple ID and Password
I have put my 88-year old mother on my mobile plan and provided her with my old Apple iPhone 8+. I had erased that phone before I sent it to her and she was able to set it up with the Apple ID she had set up previously. She recently updated her iOS which prompted her to sign back in with her Apple ID and password. She has forgotten both. We have tried various IDs and passwords that she might have used, but with no success. Given that I own the phone, is there any way for me to have it revert back to my Apple ID?