If they've truly changed, their reward is from the universe in the form of a more peaceful and fair existence. You are not the reward fairy. You are not a vending machine where they put in an apology and get a bag of no-consequences.
Madness string 98159
I can't help but feel that it's a bewildering reminder of the kind of people I share this reality with. Assuming its a person. They seem to lack the shame most humans have.