twelve o'clock
`` 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 . We were having a little argument when she left us , '' added Bea , dropping her eyes , but feeling that a little explanation was necessary . `` So we thought perhaps she went off without saying anything , so as to frighten us . '' Kittie looked at Bea in curious amazement .