This book was very engaging and I did enjoy reading it, but I had a couple of issues with it.
The first is that when the two teenagers find their dead mother frozen in the shed outside, they are entirely too calm about it, and continue to do almost absolutely no grieving. They had both been parentalized, but that would affect even the most mature kid-- and they prove plenty of times over later that they are still just kids. The other problem was that as parentalized as main character Drew is, by the end of the book nothing changes. No one ever tells this poor girl that her younger siblings aren't her responsibility, that she's barely 18 and shouldn't have to take care of anyone besides herself. Instead, at the end she is going to college while raising a teenager and an 8 year old. Instead of learning how to balance and take care of herself, she learns nothing, and just gets her difficult mother out of the way so she can be the mother instead.
Instead of this book I recommend Odessa by Jonathan Hill, Love Radio by Ebony LaDelle, All My Rage by Sabaa Tahir, and She's Too Pretty to Burn by Wendy Heard.