Wait did he teleport? How did he get behind her so fast ON STAIRS? I would have understood if he grabbed her from the front (but he was behind her) or on a level plain. Unless that is a really wide staircase with huge stairs, he couldn’t jumped down and skip stairs without very easily losing his balance and falling himself, and either way the space looked narrow, so he’d have to go around her. He would have had to drop all the books, go around her, go to a lower stair, and reach out his arms to grab her all before she fell. That is superhuman. Or like magic? IS HE MAGIC?!