Lulu wouldn't have caught onto someone running into the room screaming fire. She was far too busy trying not to moan too loudly, not wanting everyone in the castle to hear. But in the end it was a losing battle; as soon as his fingers started to do their own dance inside of her she gripped the sheets and curled her toes and groaned her approval.
Any movement on Skwisgaar's behalf that wasn't related to those gestures went largely unnoticed.