Elsewhere

When fifteen-year-old Liz is killed in a car accident, she ends up in a place called Elsewhere. Here, death is only the start of your story. You can't get sick and you can't get older. Instead, you age backwards till you become a newborn baby again. But Liz wants to turn sixteen, not fourteen ; she wants to learn to drive and to go to college. Strangely, though, Liz does find herself learning new skills and forging new relationships.
Is it possible to grow up while getting younger ?