^ That, and her only purpose is to spell everything out for the audience.
Cats and blonde watch the looting. Cats looks perturbed.
Blonde: Isn't this what you wanted?
Cats: Not like this.
There's no reason that exchange couldn't have been shown and not told with Hathaway's expression, and no superfluous companion. But Nolan is not one to skimp on the exposition of the perfectly obvious