four o'clock
But Lady Valleys ' face had suddenly become rather grim . `` So we think , child ; it 's not so simple . '' `` It ca n't be worse , anyway , '' muttered Barbara , `` than being buried alive as that wretched woman is . '' For answer Lady Valleys only murmured : `` The doctor promised that ambulance carriage at four o'clock . What am I going to say ? '' `` She 'll understand when you look at her . She 's that sort . ''