An Untamed State, by Roxane Gay.
This book broke my heart over and over again. It reads like a nightmare-fairy tale. The opening paragraph sums it up:
Once upon a time, in a far-off land, I was kidnapped by a gang of fearless yet terrified young men with so much impossible hope beating inside their bodies it burned their very skin and strengthened their will right through their bones. They held me captive for thirteen days….
Yeah, cried on the subway - twice - while reading. And yet the story is still rolling around in my mind.