And then what? You were happy for my brother to kill as many people as it took for you to find the cure for yourself. You didn't care what that would have done to him. He was seventeen, Rebekah. He shouldn't have had to deal with that. It was my job to look out for him. As a sister, you should understand that.
So I'm not sorry for helping Jeremy kill Kol. Or that doing it completed his Hunters' Mark. I regret that those vampires had to die, but if I had to do it over again, I would still do the same.