"For about the millionth time since the shooting, I felt an enormous pang of guilt." This quote basically describes how Valerie feels so far.
Nick Levil had problems with many people, so he created a list of people he hated. He called it the Hate List. Honestly, I think that Valerie was involved in it as much as Nick was because she also helped him create the book, and she wrote down the names of people that she hated. Usually the people in the hate list involved the people that bullied, or bothered them. But there is no reason to go around and shoot the people you don't like. That just makes matters worse and creates more drama. People are always staring at you in shame, they are trembling with fear whenever they are around you, because they think you will shoot them as well. That's exactly what happened to Valerie.
I think the right way that Nick should have solved the problem was by ignoring the people that bother him. Also, Jeremy one of Nick's friend isn't the greatest role model. Nick shouldn't have followed Jeremy around and he wouldn't have gone crazy and shot the students in his school. Jeremy was an older guy in the story who abused his girlfriend when he wasn't with Nick. I think Jeremy stuck the ideas of shooting the people in Nick's head, because Jeremy is obviously a bad influence... I mean he ABUSES his girlfriend.
I admit, throughout my life I have hated MANY people. But I didn't go and kill them like Nick did. I just ignored them and it helped. I especially did not create a list because if that page or book got lost, I would be in big trouble. I also don't really think I have any friends like Jeremy. I hope I don't.
Valerie thinks that she also killed the people in the list because she involved them in it. She literally hates herself for creating that list, because it killed some of her friends and put herself into depression. She doesn't want to go to school and face anyone, not even her own mother. If I were in Valerie's shoes I would of probably did the same thing. I would be to ashamed knowing I made a hate list, and my boyfriend killed most of the people on the list. It's just not right.
This is why I think Valerie and Nick did the wrong thing on making the list and shooting the people on them.