Feminine Enforcement
The Gynarchy guard-mistress makes damn sure that the foothole prisoner-slave kisses his pretty prison visitor's feet with proper footslavish respect. The prisoner is not connected to his guest in any way (other than through his lowly lips touching her dirty sneaker toes). She is just some random girl off the streets who enjoys humbling foothole-prisoners in their dungeon cells. And rightly so, for that's what the foothole prisoners are there for!