Lily was breathless. He knew! But how? Had Dorian bragged about it? Had he seen them? She couldn't think about it, it was horrible in both cases. She had to leave, and in her desperation, she transformed into a sparrowhawk, forgetting even the Disillusionment Charm. She let the shocked image of Calypso realizing what had happened be the last thing she saw of Headquarters and flew out of the window. She passed the barrier and glided onto the sidewalk, where Hugo was still talking to Harry in an agitated manner.