You should be respectful when you are questioning your superiors.
Mary is angry because her work team was given the wrong information and now they are behind schedule on their assignment, because of it.
Mary wants to find out why she doesn't have the right information.
Mary lets her boss know that an error has been made, and she needs to understand how it was made before proceeding with her work group's current instructions.
Mary asks her boss why she was given incorrect information and suggests that management is incompetent.
Her boss explains her perception of what happened and how the error occurred, and she reassures Mary that her current instructions are correct.
Her boss explains that an error was made, and she understands why it’s frustrating, but she warns Mary not to be so harsh and rude when talking about company leadership.