"Well... there's no harm in wanting to win," Mercy says as she stretches and cracks her neck. "Mind, I'll only be calling scores, but good competition's healthy for everyone. You ever done any kind of sport?" Given what Cortana is, Mercy does wonder. She has trouble wrapping her brain around the idea of a wholly artificial person, but at this point, she's got some notion about it. And the limitations it might have imposed on the other woman in her life.