Elsewhere (2005) is the title of a young adult book by Gabrielle Zevin. "Elsewhere" follows the life after death of fifteen year old Elizabeth, also know as Liz. After being hit and killed by a taxi, she finds herself in a place that is both like and unlike earth. In this world, instead of aging, people grow younger until they become infants. There, they are sent to be reborn back into the world. Liz meets her grandmother and a friend, Owen, who guides her through her new life. As the story progresses, Liz tries to find forbidden ways to contact her friends and family on earth, hoping to say her proper goodbyes.
(from
Wikipedia.org)