"Everything all right, Stephens? Up to your standard? Don't look so glum. I wish you were coming to look after me, but it couldn't be done. Sir Aubrey would be lost without you."
The idea of a tour without Stephens in the background seemed suddenly momentous, and the smile she gave him was more serious than she meant it to be. She went back to her brother, who was pulling his moustache savagely. "I don't think there's any use waiting any longer. You won't want to hurry yourself too much, and you will want to be in Biskra in time for dinner," she said as casually as she could.
He swung towards her. "Diana, it's still not too late to change your mind. For Heaven's sake give up this folly. It's tempting Providence." For the first time there was a genuine ring in his voice, and for a moment Diana wavered, but only for a moment. Then she looked at him with a slow smile.
"Do I fall on your neck and say, 'Take me back, dear Guardian; I will be good,' or do I prostrate myself at your feet and knock my head on your boots, and whine, in the language of the country, 'Hearing is obeying'? Don't be ridiculous, Aubrey. You can't expect me to change my mind at the eleventh hour. It's perfectly safe. Mustafa Ali will take care that everything goes smoothly. He has his reputation in Biskra to think of. You know the character the authorities gave him. He is not likely to throw that away. In any case I can take care of myself, thanks to your training. I don't mind owning to being conceited about my shooting. Even you admit that I am a credit to your teaching."
With a gay little laugh she whipped out the ivory-mounted revolver, and aiming at a low flat rock, some distance away, fired. She was an unusually good revolver shot, but this time she seemed to have missed. There was no mark on the stone. Diana stared at it stupidly, a frown of perplexity creasing her forehead. Then she looked at her brother, and back to the revolver in her hand.
Sir Aubrey swore. "Diana! What a senseless piece of bravado!" he cried angrily.
She took no notice of him. She was still staring at the smooth rock fate. "I don't understand it. How could I miss? It's as big as a house," she murmured thoughtfully, and raised the revolver again.
But Sir Aubrey caught her wrist. "For God's sake don't make a fool of yourself a second time. You have lowered your prestige quite enough already," he said in a low voice, with a glance at the group of watching Arabs.
Diana jerked the little weapon back into its place reluctantly. "I don't understand it," she said again. "It must be the light." She mounted and wheeled her horse alongside of Sir Aubrey's, and held out her hand. "Good-bye, Aubrey. Expect me a month after you arrive. I will cable to you from Cherbourg. Good luck! I shall roll up in time to be best man," she added, laughing, and with a nod to Mustafa Ali she turned her horse's head southwards.