Double-checked. Tussie-mussies came about in the 18th century, stuck around a long time, and her book is about the Victorian era. I think I've fixed it as much as I could!
You'd have to be an incredibly dreary person to find an exotic outpost boring. Combine that with a superiority complex, xenophobia, and homesickness, and you've got a disastrous job. From what I've read about the rise of the British Empire, there were plenty of bureaucrats like that.
I thought about that, too, and that's why I didn't excerpt any of the actual "incriminating" story. But all that took place years ago, the principles are long gone, and he said the younger generation on Tristan da Cunha really doesn't care that much.