What is the author's tone in the book, To Heaven and Back: A Doctor’s Extraordinary Account of Her Death, Heaven, Angels, and Life Again: A True Story?

In telling her very personal story in "To Heaven and Back," Mary provides an honest and detailed account of some of the darkest and most challenging events of her life. Mary is forthright about her faith that wasn't always strong and how she at times thought that God had abandoned her. Even though Mary is devout in her faith in God, there is nothing condescending or pious in her tone. It is obvious that Mary wants to share her faith in a positive way and convince her readers that belief in God is essential to a complete life. Mary was saved from a near-death experience, she writes, because her work on earth was not done. It was God's will that Mary help spread the word about her faith and belief in God's promises.