Lady Kim is a giantess who likes to crush using her feet. And she does not just do it with her feet, but her bare feet at that. She does not like using shoes or heels because she loves the feeling she gets on her feet as she crushes a slave. She had missed crushing a slave with her feet so much that today she crushed him for no reason.
Mistress Anfisa learned of what her slave had done and she wanted to destroy her. She turned her slave into a tiny doll and she crushed her with her ass. She wanted to send a strong signal to the slave and her actions did just that. She humiliated her and degraded her more than she thought was possible given that she had been with her for some time and been humiliated by her.