Why did Mr. Martin think Mrs. Barrows was annoying in 'The Catbird Seat' by James Thurber?

Mrs. Barrows' job was special advisor to Mr. Fitweiler of the F & S firm. (he being the F of F & S). Apparently she advises Mr. Fitweiler on efficiency and productivity within the firm making various recommendations that lead to the firing of various employees as well as to a plot for her murder.