It's a problem that speculative fiction has wrestled with before - what if you could bring someone you loved and lost back from the dead? It's a problem that tends to be answered with similar conclusions: doing so would be a bad idea. But the stories are not often told from the perspective of the resurrected loved one.
"The Ghost of a Girl Who Never Lived" by Keffy R.M. Kehrli isn't told from the viewpoint of the grieving parents, but from that of the replacement child. It is a beautiful story, and a tragic one. It was originally published in Issue 19 of Orson Scott Card's Intergalactic Medicine Show, and it won Third Place in that magazine's reader-voted Best of 2010 poll.