Myrtle and another character are guilty of doing same bad thing during the party, but Myrtle gets punched, while nothing happened to the other character. Why do you think this is?

yrtle grows louder and more obnoxious the more she drinks, and shortly after Tom gives her a new puppy as a gift, she begins to talk about Daisy. Tom sternly warns her never to mention his wife. Myrtle angrily says that she will talk about whatever she chooses and begins chanting Daisy’s name. Tom responds by breaking her nose, bringing the party to an abrupt halt. REally you have to give the obnoxious hateful drunk award to Myrtle. She manages to piss off just about everybody. She creates much of the animosity in the air.