Because, in spite of everything, you are not beyond redemption, Ben Solo.
You were used, your whole life. Just a puppet in someone's plan. You still did terrible things of your own accord, and you will find some way to make up for it all, no matter how long it takes. But someone was playing a long game, and you were just one piece on the board.
This place, it gives people chances they might not have had. Take them. Speak to people you owe apologies to. Try to live your life better than you have before. Prove her right for believing in that spark of goodness.
Show them you're more than what you became.
But seriously, we'll need to find you some form of community service or something.