How can you understand it? You angels have no humanity, as the other one is so proud of saying. And it doesn't matter - I made her my responsibility, I should have been the one to go there, not her. She doesn't have my experience - she shouldn't have died.
Then there's really no point to angels or god or praying, is there?
I'll figure it out.
If you still want to know what you could do that would help, you could kill the bastard tht killed her.