This book did not turn out like I expected. I kept thinking, “oh she’ll overcome that cause like, she’s the main character… oh wait… so no? But wait, yeah she will right?” Basically just like that throughout the whole book. 
But yeah, Marie Lu did an amazing job at expressing the fear of darkness and what you could do to people. This personally is the first book I’ve read like where you see that darkness firsthand— the actions and consequences and the sad humanness of it all. Really it reminded me of when I was a child and I didn’t know how to control my emotions or thoughts and everything was just roiling around. 
I had to close the book and weep at the turn of events and the way things ended up.