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
It's dumb either way; even if it were 'in your head', that would still be a legitimate psychological issue that's causing you distress and pain. It doesn't have to be physical to be a 'real' problem.