How does Liesel end up dealing with her brothers death at he end of the story?

I think that, by the end of the book, Liesel has seen so much devastation, death and sorrow that her brother's death all those years ago by the train tracks has a certain perspective to it. Death notes, Liesel's uniquely human capacity to live past such personal devastation. I don't think Liesel ever gets over these deaths, rather she accepts them as part of her life.