Hermione glared at him for a moment as he took the the book, but for now she let him keep it. She didn't need to see it to know exactly what was there, anyway. She saw the passages in her sleep.
When he was done talking though, the look had changed from a glare to a look that had always meant the same thing - that he was being thick and missing something that was obvious. "Ron. After we find the diadem, Harry's got to be caught, doesn't he? Because after that, all that's left is..." Nagini, and then Voldemort himself.