Looking around their surroundings again, Hermione backed further into the shadows, cast by the bookcase, and nodded. "I think you're right," she said, with her bottom lip between her teeth, though she couldn't be certain. For that reason, she would do everything in her power to keep her voice down and reveal just enough information for Ginny to clue herself in on.
Lowering her voice, like she intended, Hermione cleared her throat first before revealing why she insisted on talking to Ginny. "It's about Neville," she said, her voice barely above a whisper. "Someone recently found him. They couldn't get him out of Rosier's, but...they were able to heal him a little bit..."