Lady Rockabella wanted to dominate this guy because he was an imbecile. So she did what she always does and she used her nylon stockings to trample and humiliate him. And she did it slowly so that he would be humiliated as well as degraded for a long period of time. And that way, he would have no choice but to change and do things her way. He changed as needed.
Lady Rockabella wanted to make this guy cum and she wanted to do it in style. She felt that she wanted to use her feet to do it. So she gave him a footjob but she did it while she wore her nylon stockings and she did it knowing that it would hurt him. But since he knew he might not get another chance like that as the mistress was out of her league, he endured it.