four o'clock
She rose cheerfully and took the broom from her mother 's hand . `` Lie down a while , mother , '' she said , plumping up the pillows on the couch . Mrs. Gardiner sank down gratefully and Migwan put away her story and went at the sweeping . She soon turned it into a game in which she was a good fairy fighting the hosts of the goblin Dust , and must have them completely vanquished by four o'clock , or her magic wand , which had for the time being taken the shape of a broom , would vanish and leave her weaponless . Needless to say , she was in complete possession of the field when the clock struck the charmed hour . Being then out of the mood to continue her writing , she passed on into the kitchen and attacked the Fortress of Dishes , which she razed to the ground completely , leaving her banner , in the form of the dish towel , flying over the spot . `` What are you planning for supper ? ''