Complex sentence: Nancy struggles to fit in at her new school, only befriending a boy named Corky (Josh Flitter), and realizes that the sleuthing world is the only place she fits in causing her to decide to solve the Draycott mystery.
Split into simpler sentences: Nancy struggles to fit in at her new school, only befriending a boy named Corky (Josh Flitter). She realizes that the sleuthing world is the only place she fits and decides to solve the Draycott mystery.