Lilith's face didn't change as the girl seemed to realize she was in bigger trouble than it looked. Maybe she suspected Lilith for what she was, or maybe she just thought the idea of a child saying that was creepy.
The smile only grew when the girl started to run. They always ran, it was ridiculous. Maybe Lilith would have let her go if she had just handed it over, but now this had become a game, and she loved to win games. She allowed Kira to run, turning to watch her for a second. But when Kira would turn her first corner, Lilith would be standing there, alone, and with a smile on her face.
"Why are you running?" she said, smiling. "It's not very nice. I was just talking."