When she looked back to Dumbledore, she noticed how his eyes had briefly fallen on her and Draco's hands interlaced between their two chairs. Hermione kept her chin high. She felt no need to hide things here. Dumbledore knew about her relationship with Draco, and she was not ashamed to show her strong affection for the brave wizard he was. Even when Draco himself seemed to want to disappear through the back of his chair. It only made her strengthen her hold on his hand.