The Last Egyptian by L. Frank Baum

Mrs. Everingham passed the afternoon in Aneth's company. The girl was visibly nervous and excited, but made pitiful attempts to conceal her weakness. In no way did she allude to Kāra or to the fact that the hour had arrived when she was to consummate the sacrifice of her own happiness to maintain her grandfather's integrity and the honor of her family's name.

Her friend ventured one or two remarks about the folly of her promise and the absurdity of keeping it; but these so distressed Aneth, and had so little visible influence upon her decision, that Mrs. Everingham abandoned the topic and turned the conversation into more cheerful channels. When she mentioned Gerald Winston she noticed that Aneth's cheeks flamed scarlet and then turned deathly white; so here was another subject to be avoided, if she did not wish to make the girl's position unbearable. Indeed, those last days of association with Gerald had taught Aneth the full extent of her martyrdom, and now she began to realize that she was losing all that might have rendered her life's happiness complete, had it not been for the advent of Kāra and his terrible threat to destroy the family honor and send her loving grandfather to prison.