Sally barely blinked. She had decided that, maybe, just maybe Zabini had contracted the virus. Looking more closely at his face, she just nodded.
"I really don't think blowing yourself up would do any good. Besides, maybe I could help?" Sally raised her eyebrows hopefully. She couldn't leave him. Instead she took a step closer, not moving away from where his wand was pointing. If she was wrong, and he still had his magic, she had her wand in her sock as usual to protect herself.
She walked around him, towards the quarantine, ignoring the buzzing in her ears. "What kind of spell were you thinking of trying on it? Or were you thinking of using magic on it at all?" Sally stuck her hands in her pockets, feeling the vial of polyjuice, and smiled just a touch.