Collar herself

Doe looks pleadingly at you but there is no going back now.

You hold out the collar and tell her to put it on. Slowly she grasps the leather and fixes it around her neck, leaving a little slack in the hole she chooses. Shaking your head you reach forward and tighten it by a notch, hearing her gasp as it constricts her throat ever so slightly.

"So Doe," you say "Onto your knees."

Doe looks worried but drops down in front of you, looking up in a spectacularly erotic fashion. You fasten the lead to the collar and look at your ****. She's breathing a little heavily because of the collar but she is genuinely beautiful.