Of course the challenge here is to have Quinn say something so harsh it pushes this relationship past the breaking point, and deserves a physical response. This interaction is much different that Ellie’s punching of Alex. That was more comedic and jerk-reactionary. This is a long standing, brooding resentment of Ellie by Quinn.. and 150+ strips of mounting tension to show for it.
Other than reiterating the importance of WHAM! in panel two, be sure to derive the significant secondary implication. ;P