Deat Lucy in the Sky,
I totally hear you on the hope and prayer for a religion, or for anything that will make the grief process better, easier, and something that is sensible. I lost my five-year-old goddaughter two and a half years ago. The process of learning to live again was long and arduous. I spent a long time wanting to scream at everyone, ignore everyone, wish harm upon all young healthy children. For a long time, it felt like I was in a fog.
Then, little by little, things got better. I can't even describe it exactly, I can only say that you should trust the world to bring you the same path of healing that you say your brother had found. And in the process, whenever you can and it doesn't feel too painful, express yourself.