Mma Makutsi frowned. “But I do not see what that has got to do with coming out of hospital. There are always people being struck by lightning. There was a man in Bobonong last year. He was getting his chickens in out of the rain and then he was late. Only his shoes were left.”

It was not a cheerful conversation, but it had at least distracted Mma Makutsi from the subject of Phuti. And over tea, they talked about other matters and other people, including Mrs. Grant.

“I have made a decision,” announced Mma Ramotswe. “We are going to Maun.”

Mma Makutsi was enthusiastic. “This will be a business trip?” she asked.

“It will, Mma,” said Mma Ramotswe. “We shall go up in my van and stay with cousins of Mr. J.L.B. Matekoni. They live just outside Maun. Then we can carry out our investigations.”

Mma Makutsi beamed with pleasure. Dabbing at her makeup with a small lace handkerchief, she sought to repair the damage that the tears had caused. “I have never been on a business trip,” she said. “This is very good news.”

It was the reaction that Mma Ramotswe had hoped for. It would do her assistant a great deal of good, she thought, to have her mind taken off Phuti’s woes. And during that time the aunt-difficult though she may be-could look after her nephew. That would help too, Mma Ramotswe felt; people were awkward for a reason, as often as not, and the reason for awkwardness here was probably that the aunt felt her role was threatened by Mma Makutsi. If she believed herself to be needed on this occasion, perhaps she might feel less insecure. Perhaps…

“Of course, all expenses will be paid,” Mma Ramotswe went on.

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.

Mma Makutsi shook her head. “That is very kind of you, Mma, and I am very grateful. I would not want you to think that I did not appreciate your offer.” She paused to take breath. “Your shoes have always struck me as being very sensible, and will be very good up in the Delta. There is no doubt about that. But there is a problem here. Your feet are very good feet, Mma, but they are not small feet. My own feet are not the smallest feet in Gaborone, but they are not quite as large as your own feet are. And that means I cannot wear your shoes, as they would fall off every time I took a step.”

Mma Ramotswe bit her lip. Phuti Radiphuti was well off, he could afford to buy his fiancée new shoes, and she did not think it appropriate that shoes should be treated as a business expense.

“I was thinking of a pair of those boots that they have for ladies,” Mma Makutsi suggested. “You’ve seen them, Mma. You know those ones which go up to the ankles-or just above, and have laces at the front. They’re usually made of light brown suede. They’re very smart, but also very practical. Those are the shoes that I’ll need.” Then she added, “And I know where to buy them, Mma. I have seen a pair for three hundred pula. That is a very good buy.”

Mma Ramotswe looked out of the window. She knew of Mma Makutsi’s interest in shoes. It was not all that long ago that she had acquired yet another pair, only six months or so after she had bought the previous pair. With this new green pair, how many pairs of shoes did her assistant now have? There were the blue shoes, the red shoes, the shoes that looked as if they had been made out of crocodile skin, or something similar (Mma Makutsi had not been amused by Mma Ramotswe’s suggestion that it might be anteater or even porcupine skin), although not much had been seen of those after they proved so fashionable as to be impossible to walk in. On the whole, she did not need yet another pair of shoes, and yet what she said was true: one could not walk about the bush in town shoes. But it was also true that the only reason Mma Makutsi needed to walk about the bush was because Mma Ramotswe had invited her to go with her to Maun.

She turned round. “All right, Mma. You can take the money from the petty cash. Go and get those shoes.”

She felt better immediately for saying this. Mma Makutsi was a hard worker. She had not had much in this life, and she had worked diligently for everything she did have, including her shoes. This was a very distressing time, and if she could be helped through it by indulging her passion for shoes, then that was, perhaps, something that Mma Ramotswe owed her.

Mma Makutsi’s gratitude was plain to see. “Oh, Mma, that is very good news. Why don’t you come with me right now, and we can go and get those boots? And some boots for you too.”

Mma Ramotswe raised her hands in protest. “I do not need boots, Mma. I’ve got my comfortable flat shoes. You could walk across the Kalahari-and back-in those shoes of mine.”

“And what if you stand on a snake, Mma, while you’re walking across the Kalahari? What then?”

“I will be very careful,” said Mma Ramotswe. “I’ve been walking about Botswana for a long time and I have not yet stood on a snake. And we’re not going to the Kalahari. We’re going to the Okavango Delta.”

“Careful, Mma!” Mma Makutsi warned. “There is always a first time for everything. There is something called the law of averages-you may have heard of it. It says that if you haven’t trodden on a snake yet, then you may tread on one soon-soon.”

THEY DROVE IN THE VAN to Riverwalk. There was a small parking incident, in which Mma Ramotswe narrowly avoided scraping the wing of the next-door car, a gleaming piece of German machinery. It was a narrow escape, and Mma Makutsi could not avoid a sharp intake of breath as the two vehicles had their close encounter.