about four o'clock
She submitted passively to all of it , and appeared to notice no one , except now and then to turn her eyes to Mrs. Dane , with a puzzled , pleading look , and mutter with a wistful longing : `` It is n't so , is it ? I know it is n't ; '' then would drift into some unintelligible murmurings , or lay quiet with no expression of any kind in her face . `` She was perfectly well yesterday , '' said Bea , in answer to Mrs. Dane 's questions . `` She came up stairs singing , about four o'clock , and that was the last we saw of her until just now , when Kittie found her . '' `` Poor child ! What did you do all night ? '' `` We sat up until twelve o'clock , and it seemed like a week nearly , Olive said , and we all hoped that she had gone to spend the night with you , and that is what kept us from giving up entirely .