ten o'clock sharp
`` Well , now , my deary ! '' exclaimed the old woman , `` and why are you losing your beauty sleep in this fashion ? When I was young things used to be very different . Girls had to be in bed by ten o'clock sharp to keep away the wrinkles , but now they 're all agog to burn the candle at both ends . It do n't pay , Miss Hetty , my pet , it do n't pay . '' `` I 'm all right , nursey , '' replied Hester . `` I 'm the quietest and most jog-trot girl in the world as a rule .