A brief silence fell over the Defense Against the Dark Arts Office, and everyone was lost in thought.
"I understand," Hermione suddenly raised her head, breaking the silence. "So you are the turning point of their prophecy; your choices can influence the outcome of the previous one."
"And when you told Dumbledore about You-Know-Who's weakness, it was equivalent to helping Harry. The scales of the prophecy tilted toward the side of justice, and the outcome of the prophecy changed accordingly."
Chapter 456