She Doesn't Know

"It's all my fault. I should have gone to Slughorn's party with her. None of this would have happened. She doesn't know." Ron is with Lavender. Hermione goes to the Christmas party with McLaggen and Ron's world is turned upside down as Ginny comes to him with devastating news. He did something to her. She won't wake up. When Ron gets to her side, she's not moving. HBP.