She shot him a startled, frightened glance automatically looking for injuries and he grinned at her, teeth white in the dim light, and yelled that he was fine, that it was just an expression, and Hermione felt like thumping him for scaring her. She was fighting again, trying to push back the horrible nausea seeing Draco coldly execute someone evoked in her, trying to ignore the nausea her own killing created. She tried to stupefy or otherwise disable the "wolves, but it was hard and she was scared and didn't want to die, and ethics went out the window in favour of survival.