Answer:
The reading role, or reader´s role, has usually been considered as very passive action where the reader of a story simply takes a text and goes through it without interacting with it much, or without being moved. Thus the reader becomes just a receiver of information, instead of becoming involved with the text.
However, this has changed, and now readers must be much more active, and they not just receive information but become actively engaged in the action of the story.
In the case of "Walk Two Moons", the novel written by author Sharon Creech, and which was published in 1994, given that this is a story within a story, where the main character´s life is seen through the life of another, almost making them like parallel events, the role of the reader must be much more active because it is a book where everything must be felt, lived, and experienced with the characters, or it simply becomes two lifelines, one hidden behind the other, without getting any meaning, or understanding the main themes of the book.