Brenda’s recognition that her openly disdainful treatment of Tony and Hetton may be going too far seems to indicate a degree of conscience on her part. However, her response of trying to sidetrack him with his own affair indicates two things: first, that she only thinks about Tony’s feelings out of preemptive self-interest; and second, that she can only conceive of a plan based on what would work on
her. It predictably fails miserably on Tony, and the whole fiasco calls into question how well she really knows Tony at all, and how their marriage functioned smoothly for as long as it did.