OK Ron.
Based on the information and also the image you provided earlier their must be a S-1-5-21 key in the ProfileList that does include the ProfileImagePath who's Value data field points to C:\Users\Debbie.
Given your backups including appdata from the Debbie user account.
Mind you, having said that, I know from my own experience, that Windows Backups in Windows 10 occasionally appear to find orphaned data, that is ghosting and does not actually exist. Essentially, its finding a Registry key which still exists, but the path the key points to does not exist at all - an orphaned Registry entry in other words.
It is plausible that is what is going on in your case.
I'll await on how you go following the Article.