In Jodi Picoult's "Between the Lines," the narrative explores the complexities of adult life and the fading belief in the extraordinary. The question posed highlights the struggle of conveying to an adult that their disillusionment may be linked to a loss of faith in the improbable. This serves as a pivotal theme, reflecting how cynicism can overshadow the magic and possibilities life has to offer.

The underlying message suggests that maintaining a sense of wonder is crucial for personal fulfillment and happiness. As adults navigate responsibilities and reality, they often forget the power of imagination and hope, which can lead to a bleak perspective on life. Ultimately, Picoult invites readers to reconsider their beliefs and allows space for the impossible to manifest in their lives.