(((Lola)))
I hear your anger at the unfairness of life, it's very randomness. There is no normal. There is no parallel universe where our perfect life without suffering resides. There is only your little sister and you, her big sister, who loves her. She needs you just as much, if not more than before. You don't have to fix anything. Just be there for her. The future is unwritten as of yet and none of us knows what it holds. She may be able to do a lot of those things that you fear she may not. Don't suffer now for her unknown future which may not unfold the way you think it will. Stay in the present moment. Just be with her now and keep loving her. That's what she needs most from you.
Cog