I received this book free from Nyx Publishing in exchange for an honest review.

This Sapphic retelling of the Orpehus and Eurydice myth was an absolute treat. 
The cover is beautiful. Seeing two enamored strong women with daggers on the cover never gets old.
Although this is a novella, I took my time with this, to savor every detail. 
I'm not an expert in Greek classics, so this review will focus more on other aspects of the story that I feel I can speak to.
I love stories that are based around trauma, and this is certainly one of them. Teagan's grief around her mother's death is authentic. I've known that feeling of sadness when your mother can't see you get married or meet your partner. I like how Part 1 really focuses on Teagan working through her memories and an unforgiving environment, motivated only to see Cress again. 
The pace of Part 2 is rapid compared to the first, but appropriate given the high stakes. Learning more about the Shadow Princess' history was fascinating too. 
The largest strength this book has is the relationship between Teagan and Cress. I appreciated how this relationship was already established as this story began, and the techniques used to outline their relationship history. Cress is incredibly driven and somewhat hot-headed, so you can see how Teagan fell for her. Their disagreements make sense.
Since this was released last week, I'd like to share two quotes that stuck with me from the beginning, regarding their relationship, that I hope to soon verify were included in the final published work:

 ‘Her resolve strengthened; she trusted Cress and she’d follow her wife anywhere, even to almost certain death.’  pg. 10.

 'As Teagan looked around, she saw a Goddess of her own' pg. 13 That's so gay!! Me too!

All of this to say, I enjoyed it and am looking forward to future works by Holly J. Underhill, as well as anything through Nyx Publishing.