Pimpernel and Rosemary by Emma Orczy

Rosemary did not see Peter again before he left. Somehow that last vision which she had of him, hitting at a rubber ball with a stick, and his utterly callous suggestion of a game of tennis at an hour which he must have known was fateful to all his kindred, had caused a revulsion in Rosemary's heart. She felt that never again would she feel tempted to break her word to Jasper. Indeed, she felt how right Jasper had been all along in insisting that she should not discuss the grave events that affected the lives of all the inmates of Kis-Imre with such a callous, empty-headed, irresponsible young jackanapes as Peter had lately become.

So she had gone upstairs to her room, and with a curious heartache, for which she was unable to account, she listened to the familiar bustle and noise that always filled the château whenever visitors came or went. Somehow she could not bring herself to say "Good-bye" to Peter. Elza had told her that he would be coming back within the next week or so, but Rosemary, who felt too tired for introspection, could not have told you whether she was glad or sorry at the prospect of seeing him again quite so soon.