3 a.m.
`` What 's to be done about it ? '' `` It will need some thinking over . '' Peachy 's agile brains were rarely to be beaten . She slept upon the problem , and informed her friends afterwards that inspiration came to her at exactly 3 a.m. `` I know , because I heard the convent clock strike . I sat up in bed and laughed . I wonder I did n't wake the dormitory , but nobody stirred a finger . Listen , and I 'll explain .