Who is Drea from Blue Is for Nightmares and what is their importance?

Drea is in boarding school at Hilcrest along with Stacey, Amber, and Veronica. She is sixteen years old, and she is described as having angled cheeks, pouty lips, loopy, golden hair, and cat shaped eyes with curled, black lashes. Although pretty, she can also be quite vain and superficial.