Who is Boo Connell from Dreamland and what is their importance?

Boo Connell lives nest door to the O'Korens. She is very different from Margaret, and Caitlin describes her as a "former hippie." Boo is an insightful woman, and she blames herself for not having seen warning signs prior to the night Rogerson beat Caitlin in public. Boo's real name is Katherine, and Caitlin is named for her.