 Why did Orison prefer to send her reports to Washington by mail?
This laissez-faire policy of Taft Bank's might explain why she'd been selected from the Treasury Department's secretarial pool to apply for work here, she thought. Orison switched off her microphone at noon, marked her place in the book and took the elevator down to the ground floor. Girls from the ground-floor offices of Taft Bank chattered together, eyed Orison with the coolness due so attractive a competitor, and favored her with no gambit to enter their conversations. Orison sighed, finished her tuna salad on whole-wheat, then went back upstairs to her lonely desk and her microphone. Her boss in Washington had told her that this job of hers, spying on Taft Bank from within, might prove dangerous.
 She found the “pillow talk” to be improper.
 She preferred to put everything in writing.  She found the “pillow talk” to be improper.  So the reports could be done faster.  So the reports would be more secure.