Is there any other proof that this account belongs to that person "Telegram: @tkh23"?
I think they have the same username, but that account has been inactive for several months.

Is that script open source? Because it is strange to trust one ask you to run a script and send a certain amount to the address associated with that program.  "This makes the full amount paid/scammed $ 75 + 5001.3 DNR"

Sorry for your friend's loss.