What is ONE THEME of the book shattered from chapters 1 - 6

One theme that can be identified in the book "Shattered" from chapters 1-6 is the lingering effects of traumatic experiences on individuals and their relationships. In these early chapters, the protagonist, Ian, is struggling with the aftermath of a traumatic incident where his best friend, Teddy, suffered a head injury. This event not only physically shattered Teddy's life but also emotionally and mentally affected Ian and his family. The theme of trauma and its consequences is explored through Ian's struggle with guilt, his strained relationship with his father, as well as the repercussions on his friendship with Teddy.