L. Frank Baum

“ Now when this message was delivered to the Queen it filled her with dismay, for Mombi was her chief counsellor, and Jinjur was terribly afraid of the old hag. But she sent for Mombi, and told her what Glinda had said.
"I see trouble ahead for all of us," muttered the old witch, after glancing into a magic mirror she carried in her pocket. "But we may even yet escape by deceiving this sorceress, clever as she thinks herself." ”

“ But Glinda, sweet and fair though she was, understood magic better than any other person in the Land of Oz. So, by uttering a few potent words and making a peculiar gesture, she quickly transformed the girl into her proper shape, while at the same time old Mombi, far away in Jinjur's palace, suddenly resumed her own crooked form and evil features. ”

“ But the wicked old creature had already thought up a new deception, and had made Jinjur promise to carry it out. So the Queen said to Glinda's messenger:
"Tell your mistress that I cannot find Mombi anywhere, but that Glinda is welcome to enter the city and search herself for the old woman. She may also bring her friends with her, if she likes; but if she does not find Mombi by sundown, the Sorceress must promise to go away peaceably and bother us no more." ”