It's really hard to rate or to express my opinion of this book. So much of it was great, and so much was completely bonkers.

What I liked: the characters, the relationships, and the spirituality. There's a really strong underpinning of spiritual faith in this novel, used in a very graceful way. It doesn't press any particular religious faith or agenda, just the possibility of miracles, of destiny, of prayers answered.

What was bonkers: the "S" in the SF. I think part of the problem for me is that I read this fairly soon after Mary Robinette Kowal's meticulously researched "Lady Astronaut" series, and after seeing the movie Ad Astra, which had its own issues, but both of which nevertheless represented what seems at least like a generally accurate depiction of what a long trip through space would be like. Oh's "space travel" building is so absolutely crazy at times that it bumped me right out of the story. Like at Christmas they put snowflakes on the window with tape and made with a roll of paper that they just happened to have lying about? Or a window gets broken and they tape it shut with duct tape? Or, when they have lost power and are freezing to death and it doesn't seem to occur to any of them to put on a space-suit? And they have nice little sleeping quarters with duvets?

So - overall, top marks for ideas, but the devil is definitely in the details.