Hellfire, Holy Fire — Phyllis Ann Karr

Killed in a car-motorcycle collision, young Deborah Kennicut finds Heaven very different from what her ultra-Fundamentalist Bible creed had prepared her for. But it must be Heaven, because even while dying herself, she watch the motorcyclist plummet down in the other direction. Still, she finds Heaven filled with agnostics like her Aunt Myrtle, Catholics like new employers Corwin and Angela, pets and other animals who can all but talk, even pagan goddesses like Demeter! People can enjoy so many things her preacher back on Earth strictly forbade – coffee, movies, Harry Potter books. And every so often, somebody “glows up” and just disappears. Adjusting to her “saved” immortality, and long unable to remember either the name or the face of the young man she was to have married, Deborah strikes up a dating friendship with her not-quite-boyfriend Jamie who also died young. She finds herself most drawn, however, to her married employer Corwin, and learns that under certain circumstances polygamy is permitted in Heaven. And she has recurrent nightmares of that motorcyclist suffering in Hell.