[Serious] What's the hardest moral decision you've ever had to make?

Disowning my sister. She is truly one of the meanest, most hateful people I have ever known, and she hates me for some reason nobody can figure out. I kept trying to work things out with her, because she was the only sibling I had left, but it just got too bad. She was abusing our elderly mother and had stolen all her money. I tried to get my mother to come live with me, and she wanted to, but when she told my sister, she threatened to kill me if my mother left. She knew I would find out what she had done if Mom came to live with me. A couple of months later, my mother "fell" and broke her hip and my sister never even told me she was dying. She never told anybody. I heard about it after she was gone. She got furious with me when I asked her why she hadn't called and told me, and then I started to hear things that made me believe that she murdered my mother so she wouldn't have to take car of her anymore. At the time, she was dating a married man and wanted to run off to some island with him. I heard he was holding her when she died. They had her cremated that same day. I think they killed her. But karma is a bitch. Last time I heard, she was drunk, broke and in danger of losing her house -- the one she conned her elderly ill boyfriend into leave her in his will, which his other relatives contested, but they lost. She is just pure evil. I can't even imagine ever having anything to do with her again.

/r/AskReddit Thread