The lady herself was probably much more involved in the actual "doing", rather than the arcane practices of filming, post-production editing, commentary dubbing and addition of rolling credits. So it is in my view entirely possible that she didn't have the chance to see the finished production before it was broadcast, nor any directorial powers. My own very limited experience of film production crews is that they can be a law unto themselves with regard to the end product.
Having said that, I read through this thread first before watching the film on iPlayer, and thoroughly enjoyed it, notwithstanding! Having worked or holidayed in several of those marvellous African locations, I was quite spellbound from start to finish. I have no carping criticisms to make, and have some respect for the lady's personability and chutzpah in what were clearly not easy circumstances at times.