Jenny is wearing the hardest boots she owns and uses them to step on her slaves skull her boots have big thick soles and massive thick square heels, this girl is trying to hurt him and she succeeds she toys with him stepping all over his head with her big hard boots, you can see her concentration on her face as she is focused on hurting him she even steps on his head using her big block heel and applying all of her weight on his head, this girl is really hurting him and enjoying him suffering beneath her boots.