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
Am I crying into a pillow over here? No. Crushed by anxiety? Only sometimes. But day after day of nothing... mattering? Is rough. Even eating food and showering are hard to get myself to do, and yet, do I feel better when I manage them? Not so you'd notice! And we do it all again tomorrow.