Great point. Definitely important and something that needs an explanation.
My only quibble with that is how would he know there isn’t another copy?
If I were being blackmailed and someone handed over a thumb drive or pictures or whatever, I would NEVER believe that there wasn’t another copy out there somewhere. A blackmailer is already a bad person, so why would you ever trust them not to lie?
Maybe .. Huma handed over something else? Not info on Graham but info on Hillary or someone else?