User blog comment:IamJakuhoRaikoben/Chapter 334: Sin and Sacrifice, Review./@comment-112.198.77.125-20130609072557/@comment-7418318-20130609075017

F-Lucy was in a prison cell and was knocked unconcious when the Dragons appeared. When she woke up, everyone else was already dead, so she had no way of knowing how exacty Gray died and thus couldn't write it into her journal.