Tell her they must go indoors.

"Shh!" said Machiko. "We must go indoors. To my chamber."

Swiftly she rose, taking Nanoko by the hand and leading her on a stealthy retreat through the rose blossom bushes through the garden, back to her room.

From somewhere in the courtyard they heard the far off sound of laughter, and the distant echo of a gong froze them like statues for a moment, leaving them paused breathless behind a stone wall.

Nanoko smiled at her reassuringly, and they scampered like naughty children across the varnished oaken deck outside her chamber. Slipping the rice paper door open, they entered Machiko's chambers.