I wanted to love this series, and I did, until the very end of this book.....
I thoroughly enjoyed books 1 & 2 of the Tearling Series. I thought the writing and story was very well done. I felt the same for the majority of the final book as well. 
Most of the Fate of the Tearling is done as a history revealing what led to the crisis the Tearling now finds itself in. The story was good, though I will admit it was slower paced than I expected. This series did a lot of switching between fast and slow-paced pieces of the story. Given the way book 2 ended, however, I had expected the finale to be a face paced, action-packed story, and it wasn't.
Without giving away too much information, because you know I do my best to keep my reviews spoiler free, I will simply say that the ending killed the entire series for me. I had a suspicion for the better part of reading this book that it was going to end the way it did and I was sourly disappointed to find my suspicion correct. It's disheartening, to say the least, to follow a series (especially one as long as this one) for the ending to leave you feeling it was all a waste of time. 
Overall, I would have to give this book a rating of 3 dragonflies. The first 75% of the book is good, but the ending really destroyed it all for me. Content rating would be 18+ in my opinion. I will also put out a trigger warning for a borderline sexual assault/rape scene.
If you want to read Fate of the Tearling, click here or on the cover photo above. You can also get book 1 here, and book 2 here. I've reviewed book 1 here and book 2 here if you'd like to check those out as well. 

I honestly wondered for just over halfway through this book whether or not it was the final book of the series. The story didn’t seem to be moving along quickly enough for it to possibly be the end. The last ¼ of the book, however, the pace picks up significantly and the ending seems to come a bit too fast. I have mixed feelings about the ending, and without giving away spoilers, I will simply say that it was fitting overall, but not what I wanted.
Overall, I enjoyed the development in Kricket's character in this book and I enjoyed the relationship she developed and the struggle surrounding how it developed and played out. There were a few things I think I would've liked to have seen done differently, but overall I was also left guessing for the most part on what would happen. 
I give the book an overall rating of 4 dragonflies and, once again, would say it is 16-17+ due to romantic scenes. 
You can get a copy of Darken the Stars here. The first book, Under Different Stars is available here and the second book, Sea of Stars is available here.
You can check out all of Amy’s works here, I plan to read more of her works in the future so keep a lookout for more reviews in the future.