I just published a trio of micros called Sexdoll. They revolve around a series of MMF threesomes involving a married couple and a stranger. A different stranger every time.
The woman at the center of the stories--let's call her Sexdoll--is realising that the submissive in the situation is really the one in charge.
She holds the power, but lets the men believe that they do. They're easier to control that way.
https://www.lushstories.com/stories/microfiction/good-girl-9
https://www.lushstories.com/stories/microfiction/fucktoy-2
https://www.lushstories.com/stories/microfiction/dirty-little-slut
Good Girl
Who are you?
Microfiction