If this court mouse's view of Queen Elizabeth I had been written by a grown-up, we'd be less tolerant of its coy and precious touches. But it's impossible to forget that Alexandra Elizabeth Sheedy is only twelve, and she does give the Queen's speeches--both the haughty outbursts of temper and the smiling ones to Essex in the bedchamber--the charming accents of children making believe from little experience. The mouse's powers of gossipy observation are turned not only on the boudoir but on balls and banquets as well, and even, after the fall on Essex, on his execution; whatever the scene, Sheedy keeps it frivolously aquiver with confrontations and minidramas. Levy's line drawings have the same odd proportions and unusual perspectives that almost seem deliberately naive. Both are delightfully precocious, though of course that's not a quality that impresses children.