I had thought of the no-hyphen option, and since the text in this book is left-aligned, it would probably have been acceptable with a bit of futzing to prevent short lines. Fortunately, we have the option that seems to be the best one for now. The author will be reading the first pages, so I’ve asked her somewhat forcefully to pay particular attention to the way that the transliterated text is hyphenated because neither InDesign nor I know where the acceptable breaks are.
I haven’t seen Taubman’s book, so this might not apply, but in (a rather weak) defense of Norton, InDesign does frequently fail to follow H&J rules (and Keep rules) when footnotes fall at the bottom of the page. That’s no excuse for not looking at every line and page break to make sure they’re right, of course, but I suspect that Norton paged the book using one of the automated packages out there. Someday, those packages will replace me, but they’re not there yet.
Best wishes and thanks to you both, David and Chris, for your advice.