She snags him just before he can make it out of the bathroom to give him a kiss. Smiling, and instructing him to 'behave', she then closes the door, leaving it cracked just a little.

(A door that's already ajar is less intimidating, she figures, should he need in.)

She sets her clean clothes and one of the towels on the vanity chair and scoots it near the shower, before turning on the water and undressing. Within minutes, the click of the shower door opening and closing again can be heard.