Yu observed what she was doing and even was shocked himself when he saw her pull off that innocent side, when he not even a minute ago saw her stabbing a hollow for fun. She used her wound to her advantage to trick a bunch of criminals. Maybe he should have found a better group for her to take down, since these ones seemed rather dumb if they even attempted to help. But the guards were dead so her trick worked out for her. A female guard then opened the door and looked at the two dead guards and the one woman standing among them. She stared at her for a bit before closing the door where you could then hear shouting.