Destroy the book, she apparently had to destroy the book, so, somehow, she would. After flipping her phone closed to get away from the boards, she peered down at the mansion from her spot across the street, sitting way up on another building. A quick x-ray of the building, and she knew just were Isobel was.
Security was good, Isobel would probably know when Kara came into the hotel, so she was going to have to act fast. Kara moved silently toward the mansion, but quickly, stopping to the side of the window she knew Lana was visible too. What were the chances she had seen her? Of well, act fast. Yank open the window, probably setting off all kinds of alarms in the process, and get in there.
The book was in her hands. Acting, Kara pulled back the window in one swift movement and flew into the room in a blur invisible to the human high, hands aiming for the book.