Callender is an amazing writer, once you get used to their flow and style. People saying the protagonist is unlikable as missing the point: she is supposed to be. This is a gripping, chilling, and deeply emotional novel, showing the horrors of slavery through a fictional lens, written by someone who actually understands this pain - instead of white authors pretending they do. This book is a brutal, and honest, portrayal of the results of privilege and power. It is not a novel for everyone; it is not supposed to be. But you should read it anyway. 

This is a hard book. The characters are hard through necessity, the protagonist Sigourney is honestly downright unlikable, and her participation in a system of slavery poisons her belief in the righteousness of her cause, and there's very little opportunity for love to bloom. It's a tough read, especially since Callender doesn't shy away from (nor do they revel in, which was a nice change from books by white authors that use slavery) the worst parts of slavery and they are very clear that Sigourney is not a good person. But I also feel like all of this leads it to being such a good book. I'd recommend getting a version of the book with the "extras" in the back to read Callender's Q&A about their story. I thought their discussion that they wanted to create a work about complicity with such a damaging system and that they wanted to have a book that dealt with privilege and complicity and reflecting on their own privilege and complicity in oppressive systems.