And when they did not know the name, even though the picture pleased them, they waited around until they heard someone else saying good things, then they stood before it murmuring, "How lovely." She had put Ann in the catalogue; she had seen to it that she was properly hung, and she herself had stood before her proclaiming something rare and fine.

That meant that Ann was taken for granted.

And being taken for granted meant nine-tenths the battle.
It would be fun to fool the catalogue folks.

And she need have no compunctions about lowering the standard of art because the picture she had found out in the back room and surreptitiously hung in the night belonged in the gallery a great deal more than some of the pictures which had been solemnly carried in the front way.

It was the catalogue folks, rather than the lovers of art, were being imposed upon.
And Mrs.Prescott, though to be sure a maker of catalogues, was also a lover of art.