Carnac's Folly, Volume 3 by Gilbert Parker

As election affairs progressed, Mrs. Grier kept withdrawn from public ways. She did not seek supporters for her son. As the weeks went on, the strain became intense. Her eyes were aflame with excitement, but she grew thinner, until at last she was like a ghost haunting familiar scenes. Once, and once only, did she have touch with Barode Barouche since the agitation began. This was how it happened:

Carnac was at Ottawa, and she was alone, in the late evening. As she sat sewing, she heard a knock at the front door. Her heart stood still. It was a knock she had not heard for over a quarter of a century, but it had an unforgettable touch. She waited a moment, her face pale, her eyes shining with tortured memory. She waited for the servant to answer the knock, but presently she realized that the servant probably had not heard. Laying down her work, she passed into the front hall. There for an instant she paused, then opened the door.