Rachelle wants her step-brother give her a ride to the mall so she can buy stuff she doesn't need. He would rather sit around and work out. Rachelle doesn't take to lightly to this attitude and tramples her step-brother's chest before sitting on his crotch.
Rachelle smothers her step-brother's face with her stinky soles and makes him deeply sniff their stench. The bratty step-sister has her step-brother under her control and under her feet! Eventually she humiliates him enough into the right amount of submission to get what she wants.