five minutes to seven
People still crossed that way ; their boat was a sort of ferry and there was a charge . `` There might be a little fog to-night , but it did n't matter . Margot knows the way across blindfold -- Margot would row the lady . She would be waiting with a lantern at five minutes to seven ; and again at half-past nine . Not too late at all ! But Margot would not wait on the other side , it was too cold . They would lend the lady a whistle , and she must blow on it from the far bank . ''