Quick vignette I just wrote, worth turning into a full story? [Str8][f/FM][Fsub][swing]

So there she was.

Emma lay on her stomach on the silky white linens, pale legs splayed outward spread-eagle. Her arms were sharply pulled behind her back and cuffed together at the wrists. Soft nylon ropes snaked around her ankles pulled taut down to the mahogany feet of the bed. Every inch of her porcelain-white body was nude. A red lace thong clogged her mouth, soaked in a blend of drool and her own excitement. Her creamy asscheeks were marred by the bright pink silhouette of handprints.

In front of her, a monitor played a video. On the UHD screen, Emma was in an equally compromised position. A middle-aged man lay atop the blonde girl, thrusting his hips against her ass while she locked lips with another woman lying beneath her. Sandwiched between the married couple, Emma was whimpering obscenities in the older woman’s mouth. The man’s grunts crescendoed and his body tensed up on top of Emma’s petite frame. The woman raked fingers through Emma’s golden locks and smiled tenderly.

Now, the nude girl’s eyes were locked on the image being replayed before her. A bead of wetness dripped onto the bed from between her open thighs.