Christa kept a close eye on Roxy, worried for her. She somehow knew that the other woman was nervous and that made Christa stronger, wanting to help her. 

As they searched, Christa thought of what was going on. "Do...do you...think maybe it...was the Rapture?" She asked, gulping a bit and looking up at her. She had a serious look on her face and she just certain of her guess. It was logical, after all. No one was here, it seemed, and they all disappeared in a very strange way. As if teleported or something.