They have very good medical facilities on cruise ships - a first aid kit and a hand hold?! I mean, I still wouldn't go on a cruise right in the middle of chemo, but they do have doctors on board!
I think she is really struggling with this chemo, and her general health. I wonder if Tui are wondering whether it was such a great idea to gift a free cruise to someone so poorly. Apart from the fact that she is unable to document the whole thing properly, the optics are quite bad for them as well, exploiting a very ill person for marketing purposes.
It's sad really. She is trying to tick off her bucket list and fit in as much as she can, which is understandable. But the reality of what is happening is really kicking in, she is probably panicking and feeling really scared.
I know most terminally ill patients go through the exact process just going about their normal lives, rather than on cruises and holidays, but it's still kind of uncomfortable to watch it play out.