What a horribly sad thing to hear about. I wish I had any wise words to share, but this is such a situation that no words will do, I just feel downcast about the world we inhabit where such a thing can happen, and even for no good reason. I pray that this won't be too much to bear for those closest to your cousin. I pray for you, that you might be filled by the Holy Spirit and love and wisdom to share to those burdened by this tragedy, because the best you can do is to spend time thinking and doing good things for those that are victims of the murder, to avoid sitting alone and thinking of this, no good thing ever come from that. I pray also that through you the parents and closest relatives of the boy will find strength to endure this without getting lost in the bottomless grief. Remember that it mean so much just by being there for someone, to help with anything that might be needed, and share love and understanding. In things like this we see the answer to "why is there so much evil and suffering in the world if there's a God?" - Because sin have come into the world. That's clear to see. Just remember that God is there, and there's peace to find in seeking Him. I pray that you might be as a mirror for his love and bring it to those that need it the most. I pray for you and all of yours to find strength to endure all of this. I'm very sorry about this. Be blessed...