Sad plot, main character is kind inexplicably/ people in the book are confused about it? Might be like an apocalypse, but it is definitely sad. Plot twist... Spoiler.

[Meg]

Repost because I needed more details. My mom told me about this and I haven’t actually read it. This was years ago so I barely remember the conversation, but she really loved it.

[Kris]

Meg, what's the genre (which we need to add to the topic header) - e.g., fantasy for adults or teens?

Around what year did your mom first read this book or hear about it?
Story's location?

I removed the spoiler from the header and added a spoiler alert.

SPOILER...






(view spoiler)[Plot twist where it turns out everyone is an angel/other celestial being and the world turned them bad? (hide spoiler)]