"It's time for me to go," you say, grinning.

Pauline's only response is to struggle in her bonds.

"Don't worry, you won't be lonely," you smile, picking up the large vibrator and making sure it's well-lubricated.

You slowly push the vibrator into her ass, and she grunts as she's invaded by this huge intruder... once it's in as far as it will go, you put it on full power, bid her farewell, grab your clothes and leave...