For me? A genuine apology and remorse shown for the mistakes of the past. And a promise that it won't happen again in the future. And to be treated with actual respect
For example, one of the last things to happen at home was a fight between myself and Kol. It was bad, it was really bad. Kol nearly did something truly terrible to me, but I had pushed him into it, with my stubborn refusal to listen to him. But here, we've talked about it, at length. I am so sorry I didn't listen, that I was selfish, and he's sorry he nearly crossed a line he never could have come back from. If we could go back in time, we'd do things differently, and I have faith now that that situation, or one like it, will never ever happen again, because we'd treat each other with more respect now.