She was pretty deaf at the time so he replied, "YES. I believe SOMETHING HAPPENS." Later, at his desk, he wrote a longer response.
"I believe that what happens when you die is that, in ways I knew no more about than she did, you are given back your life again, and I said there were three reasons why I believed it. First, I wrote her, I believed it because, if I were God and loved the people I created and wanted them to become at last the best they had it in them to be, I couldn't imagine consigning them to oblivion when their time came with the job under the best of circumstances only a fraction done. Second, I said, I believed it, apart from any religious considerations, because I had a hunch it was true. I intuited it. I said that if the victims and the victimizers, the wise and the foolish, the good-hearted and the heartless all end up alike in the grave and that is the end of it, then life would be a black comedy, and to me, even at its worst, life doesn't feel like a black comedy. It feels like a mystery. It feels as though, at the innermost heart of it, there is Holiness, and that we experience all the horrors that go on both around and within us as horrors rather than as just the way the cookie crumbles because, in our own innermost hearts, we belong to Holiness, which they are a tragic departure from. And lastly, I wrote her, I believe that what happens to us after we die is that we aren't dead forever because Jesus said so."
I enjoy Buechner's exploration of his mother's question. Very creative and bold.