If you still have access to the drive where the original wallet was created, you can still be able to recover it even if it was deleted from that drive.
I don't know what command you use in Pywallet if it's just dump, then try other commands to retrieve these private keys.
Check the links from the quoted below
The original drive was a corrupted SSD which is in a data recovery process,
and it probably won't work because it has been 6 years, I was told there were many electron dislocation on the nands.