There's a humming sound and the apparition disappears from before Sarah. It is followed by a clang as Sarah feels something tap the chest and back of her armor.

"Answer only with a 'yes' , or a 'no'." The voice allows no easy pinpointing, but if Sarah glances behind herself, the no-body is six feet behind her and slightly to her right. Its back is turned to her. She can see there's a faded, circular design on the back of its coat.

These weren't hard blows. Sarah can surmise that even if she was wearing normal fencing armor, she'd be unharmed. There was no ill intent behind the question she blurted out, so this isn't a penalty - just a reminder that this is a game, not a discussion.