ten o'clock
By-and-by she and Ruth Craven found themselves the only girls who were walking down the road called Southwood Lane . This road led right into the centre of the shops where Susy 's mother lived . `` What a good thing , '' said Susy , `` that I took the latchkey with me ! It is past ten o'clock . Mother would be wild if she had to sit up so late . '' Ruth was silent . `` Are n't you happy , Ruthie ?