I read this as 9. A book about a problem facing society today in the Advanced prompts for the 2018 PopSugar Reading Challenge, though it's hardly a problem of just today.
There are many things to love and hate (you, like love-hate) in this book, but my favorite thing was the way Star was mentored by the people in her life. It's such a powerful thing to have good mentors and Star understands that she's blessed in that way and uses her gifts. What a reminder that we have to foster these young people, and never forget our privilege.