We interpret the world through stories. . . everybody makes in their own way sense of things, but if you have stories it helps.
All I can say is, it's a sort of kinship, as though there is a family tree of grief. On this branch, the lost children, on this the suicided parents, here the beloved mentally ill siblings. When something terrible happens, you discover all of the sudden that you have a new set of relatives, people with whom you can speak in the shorthand of cousins.