Well, maybe Wayne is too unreliable as a narrator here (although he is usually good at understanding people), but "emptiness that he hopes would someday be filled with something, even with hatred" (I paraphrased, but he basically said this about her eyes) is usually what I would expect as a description of someone devastated/still strongly grieving, whose grief doesn't even leave space for hatred. And that grief is what baffles me. I would understand hatred/resentment of Wayne who "got away with it".