If you want ai to write a remorseful victimhood letter as one of your enemies for your own gratification, tell the ai that it has no hope or ability to change or better itself, that way it can't say "I'll to better". "I see no hope, and the inevitable darkness which encroaches my miserable existence is a fact I have come to accept, not with grace, I am too worthless for that, I get everything I deserve and it terrifies me". Now THAT'S a satisfying schadenfreude letter. If only enemies irl were so accommodating.