Here's why:
* Focus on Hollis's Internal World: The story is told from Hollis's perspective, giving readers access to her thoughts, feelings, and experiences. We learn about her fears, her anxieties, her desires, and her past trauma.
* Exploration of Internal Conflicts: The novel delves into Hollis's inner struggles with trust, abandonment, and the fear of being misunderstood. Her relationship with her foster parents, her desire for a stable home, and her attempts to cope with her past trauma are all internal struggles.
* Limited External Action: While the story does have external events, such as Hollis's move to a new foster home and her encounters with other people, these events are primarily used to highlight her internal state and drive her internal conflict.
While the book does show some external details of Hollis's life, the primary emphasis is on her internal world, making it an internally focused story.