What is the author's style in 13 Little Blue Envelopes by Maureen Johnson?

13 Little Blue Envelopes by Maureen Johnson is written entirely in the first-person perspective of the main character, Virginia Blackstone. The story is told reliably and the narration is consistent throughout. Virginia, or Ginny as she is known by all, takes a leap of faith when she follows the directions set out for her in a series of envelopes that are assembled by her now deceased Aunt Peg. Peg begins by directing Ginny to go to her last known residence with her back pack packed and ready to go. She is to avoid guide books and maps of any kind, trusting simply in the instructions that follow. Ginny, a high school student, does as her Aunt Peg requests, and soon finds herself on a plane that will follow in the very footsteps her Aunt took before her. It is an adventure that teaches Ginny to be confident in herself, to believe she is an interesting person in her own right, and opens her mind to the myriad of possibilities that life has to offer. Ginny chronicles her travels, adhering to the instructions laid out for her by her Aunt in thirteen sequential envelopes.