Billie will look at Zach and mouth, 'I'll take care of her.' Because at this point she'll have been around him long enough to know he cares about her. She'll take Rose's hand. "Come on, let's go have some fun."
Alex will look at Zach. "Billie won't let anything happen to her. She might come off as a hard ass, but she cares about her own." He'll pat his shoulder. "You and Rose have been inducted to thay crazy lot. I mean you saw how she got about Clary when Jackie insulted her."

Wow... well... that explains a lot. [S]Still going to forever sibling ship them tho XP [/S]

Billie hates Darren because of his attitude about the lives of others. He totally disregards it and it pissed her off, especially when he watched Alex get attacked by other demons and didn't do anything. Alex might have been okay, but it was like a 'fuck this shit' moment for her.