This clearly pleased Mma Makutsi. “Yes,” she said approvingly. “That is the general rule with business trips. They told us about that at the Botswana Secretarial College.” She did not mention that they had also warned: Do not go on business trips with your boss. Of course they had in mind a situation where a male employer invited a female secretary to accompany him on a business trip. That was an invitation to disaster in most cases, as more might be expected of the secretary than mere dictation. This was quite different, of course; a business trip with a female boss was just a business trip. But she wondered what expenses there would be. If they were travelling up to Maun in Mma Ramotswe’s van, then there would be no tickets to be bought, and Mma Ramotswe had never asked her to pay for any petrol. There would be no hotel, if they were staying with Mr. J.L.B. Matekoni’s cousins, and she would not need any new clothes or … Shoes?

“That is very nice,” Mma Makutsi said brightly. “You mean incidental expenses?”

Mma Ramotswe nodded, cautiously.

“Such as shoe expenses?” Mma Makutsi ventured.

There was a silence. “I’m not sure what shoe expenses are, Mma,” said Mma Ramotswe. “If your shoes are damaged up there, then of course the office will pay for them to be fixed. But that is very unlikely, I think. I was thinking more of …” She was about to list the purchase of the occasional snack on the journey, and the cost of food up in Maun, but she did not have the chance to complete what she was saying.

“It is very wild up there,” said Mma Makutsi firmly. “It is the Delta, as you know. It is not Gaborone, where there are streets and where the paths are safe. This is the bush, Mma, and you cannot wear town shoes in bush like that. You will fall into an anteater hole, or something like that. There are many things like that in the Okavango Delta.” And then, with a final flourish, a petard of Mma Ramotswe’s own making now hoist, “That is well known, Mma.”

Mma Ramotswe struggled to contain herself. “What do you have in mind, Mma Makutsi?” And then, with what she felt was a very timely move, she said, “I shall be very happy to lend you a pair of my stout shoes, Mma. You cannot wear those nice green shoes of yours up in the Delta,” and added, “even if they would be very good camouflage.” Irresistibly, irreverently, she imagined Mma Makutsi moving through the thick grass, her feet now successfully camouflaged and invisible, but her large glasses catching the sun and giving everything away.