Mistress Alexandra was shocked to learn that her next door neighbor was a bully and that he caused a lot of misery to people. She was bullied when she was young and she vowed to always step up for those bullied and so she was not going to sit back and let him continue to do what he did. That is why she chose to fist him and torture him for it. She made it a painful and cruel affair so that he realized that he could not afford to keep doing it.