The Mystery of Grace by Charles de Lint

Our heroine is Grace Quintero, a female auto mechanic who specializes in custom hot rods. When her local grocery store is robbed, she is in the wrong place at the wrong time. Killed by the robber, she finds herself in an odd afterlife. This book is a little difficult to categorize. It has elements of urban fantasy, magical realism, romance and mystery. It's a tender book, full of love, hope and Grace.