Caitlin became very closed off from her family and friends, but nobody realized what was happening due to being worried about Cass. She continued to go out with Rogerson, despite the bruises that would follow. If Cass had not left, Caitlin would not have felt the need to date Rogerson in order to believe her world was perfect. If Catilin did not meet Rogerson, she never would have gotten hurt by him and her grades and life would not have slipped away right before her. Lastly, without Rina, she would not have been able to overcome her problems with both Cass and Rogerson. Therefore, if these events in Dreamland by Sarah Dessen never took place, the story would have been greatly changed.
First of all, Dreamland is based off of Cass leaving. If she