Good(?) things come to those who wait.
The sub has a foot fetish and has been desperate to get at Miss Cate’s feet.
She had already been teasing him, let him smell without touching or kissing. She had also had quite an active day, spanking, caning, pegging and more and her feet got quite hot and sweaty.
So now, he does get to taste her feet – as she gags him, pushing her sweaty stinky feet down his throat. She also lets him touch her feet, but, touch in the sense that she is going to kick him in the face, slapping with the soles of her feet before smothering his face under the sweat of her feet.
The pecks he is permitted to kiss the feet goodbye is about as nice as it’s going to get for him.