Elsewhere by Gabrielle Zevin

Liz is a fifteen year old girl who was killed in a hit and run car accident. She wakes up on the SS Nile, a boat to Elsewhere. Once she gets to Elsewhere she finds her grandma Betty. As she starts to get used to Elsewhere she makes a new friend, Owen, who teaches her to parallel park. Soon after Liz realizes that she loves Owen, and Owen learns that he loves Liz. But Owen having been in Elsewhere longer than Liz is much younger. So when Owens wife dies and comes to Elsewhere he breaks up with Liz, who is crushed. This book is very good, but at some points it is very hard to follow.