They let Hermione stumble to a halt and she stood in the dark without even a lumos, and didn’t cast one in case the Death Eaters could see, just shoved her wand in its holster and resisted the urge to feel around her "til she found all three boys. That could be awkward. Feeling in the dark. Who knew what she might find. She giggled a little, head swimming. The sound of their breathing and her stifled, shrill laughter was loud in the dark, and when she had finished giggling, Hermione could hear herself whimpering involuntarily, like a wounded puppy.