Death leaves us feeling flat and thinking the world mean. Lewis knew it, but Joy's passing made it real and in full color. He questions in the third chapter of A Grief Observed what kind of faith he had, and, if, "my house has collapsed at one blow." He calls his faith a house of cards - more imagination than true faith. "If I really cared, as I thought I did, about the sorrows of the world, I should not have been so overwhelmed when my sorrow came," he says.
Doctrine says it's the latter, and Lewis is inching closer to a place where theology and grief will again see each other, eye-to-eye. But, as Lewis points out, it's all the more difficult when it's not you and it's about another person and their pain.