While it started off strong with some compelling world building it quickly turned into a slog with repetition of the same handful of distinguishing elements lazily and repetitively tossed into seemingly to keep the sci-fi/fantasy credentials of the story certified. No flora to note and only two examples of fauna that I can recall. The interesting conceit being that they are called "bison" and "crocodiles" while bearing no resemblance at all to the creatures we know by those names. The latter is defanged (literarily) of its impact when about a quarter of the way through it is given a new "respectful" name.
That, coupled with the painful disorientingly contemporary teen angst filled dialog amongst and between the four all but indistinguishable female leads (Sophie, Bianca, Alyssa, and…Mouth) made for an exceptionally disappointing first 50% of this book.
And, it certainly didn't help that whatever real conflicts there may have been in the tale (at least 3 separate "quests" are neutered within the first third) are clearly secondary to the (romantic?) will-they-or-won't-they relationships between the two pairs of leads.
So, no, I did not finish. I don't think I knew what I was getting into.