Ron had been secretly hoping that Hermione's parents would be able to talk her out of going home. He meant it when he said he'd take care of her, but when she'd woken up in so much pain that morning, he was regretting putting the idea in her head.
However, now that she was home, and they were alone, she did seem in better spirits. That would change, however, when she read her journal. He retrieved both that, and the Dicta-Quill and nodded. "Yeah," he confirmed. "But before I hand this over, there are some things you should know."