The Cheerful Smugglers by Ellis Parker Butler

When the Commonwealth of Bobberts had adopted the Fenelby Domestic Tariff it had been Mrs. Fenelby's duty to inform Bridget of it, and to explain it to her, and for two days Mrs. Fenelby worried about it. It was only by exercising the most superhuman wiles that a servant could be persuaded to sojourn in the suburb. To hold one in thrall it was necessary to practice the most consummate diplomacy. The suburban servant knows she is a rare and precious article, and she is apt to be headstrong and independent, and so she must be driven with a tight rein and strong hand, and yet she is so apt to leave at a moment's notice if anything offends her, that she must be driven with a light rein and a hand as light and gentle as a bit of thistledown floating on a zephyr. This is a hard combination to attain. It is like trying to drive a skittish and headstrong horse, densely constructed of lamp-chimneys and window glass, down a rough cobble-stoned hill road.

If given the rein the glass horse will dash madly to flinders, and if the rein is held taut the horse's glass head will snap off and the whole business go to crash. No juggler keeping alternate cannon-balls and feathers in the air ever exercised greater nicety of calculation than did Mrs. Fenelby in her act of at once retaining and restraining Bridget.