Isabella wears flat winterboots and her slave has his hands on the floor awaiting a bone breaking punishment.
Isabella steps on the hands, stands fullweight on them, walks over how they would be a part of the floor.
Ths boots are flat, but the sole and the heels are hard, with Isabellas weight he gets a good hand-crush-punishment.
Ones he gets enough on the inner side of the hands he turns them around and Isabella steps immediatly back on the poor bones.