This book isn't for me. 
I would honestly rate it lower, but i feel like that would be unfair because I don't think I'm the demo for it. It's very young adult.
The format for ao3 is fine. For a novel, it's horrendous. The concept is super unique and intriguing, but honestly the book barely gets into it.  It focuses on, for the most part,  2 main characters,  Stef and Christine but doesn't stay with either long enough to really build on either. There's also a smattering of a crapload of other characters with similar names (Paige/Pippa, Aaron/Adam) and so much back and forth dialogue when there's several people in the room.  It was incredibly difficult for me to get through.

For this to be an actual novel, there would need to be some serious editing needed. So much stuff was rehashed over and over again when it would flip back and forth from Stef to Christine, I about lost my mind. 

Great ideas, but not executed well enough for me at all.