The author is @agirl292
Official cover:

Summary: (not full)
(...) Meet Amy, a 15 year old genius, in her senior year of high school. After she found out about her brother's death, and how he died, she knew that somebody had to have been behind it. She knew that it hadn't just been a coincidence that he had died a few days after protesting against the government, getting so many haters. So, with help from her best friend, Bella, and the new next door neighbor, a guy named Coby, she collects the puzzle pieces that her brother had left behind...
...And puts them together, forming a picture she had never imagined was possible.

Personal Opinion
I really like the idea of this book, honestly. I have to say @agirl292 my favorite character has to be Connor. He is just... funny? I don't know, I just like him. You have a lot to work on, but I'll asure you that you'll succeed.