So the corrections went very well and I was able to post back the manuscript (hopefully for the last time) to New York today! Hurrah!!
But not before I spotted a flaw much bigger than a misplaced hyphen. A tiny hole in the plot that, ‘if you blink you’d miss it’ but nevertheless, was potentially bothersome. So, after a quick call to my Mum in Nigeria (where half the book is set) she was able to put me straight on a few things which I then included in the final manuscript. It was only a few lines but an important few lines ….