twelve
o'clock
And now it seemed to her that he was leading her on from subject to subject through a childish dislike to going to bed . They were actually giggling over Mr. Lanley 's adventure when a motor-brake squeaked in the silence of the night , a motor-door slammed . For the first time Adelaide remembered her daughter . It was after twelve o'clock . A knock came at her door . She wrapped her swan 's - down garment about her and went to the door . `` O Mama , have you been worried ? ''