Why is Barbara called Penny? Who gave her the nickname and why? How many stories are there about the origin of that name? Which one does Penny prefer to believe as the truth? Why?

What is Penny's impression of what Heaven is? How does that change or get added to throughout the story? In the end, how is her idea of Heaven revised, and how close is life to the heaven she now imagines?

Where is Penny's father? How and when does Penny finally learn the truth about what happened to him? Who does she initially find out from? Who gives her most of the details and how do they change the way she perceives things?

What accident does Penny have? What injury does it cause and what is her initial prognosis? Who is initially blamed for the accident and why? What is the...