How can I recover a facebook account?

I'm trying to help my sister recover her FB account. Both of her emails attached to her account are no longer in use. (one was a student email that was closed since she is no longer a student and the other she deactivated because it was hacked) Her number is still attached to it and valid, but for some reason, FB keeps sending the reset codes to the old emails.

Is there anything else she can do?