This book... was definitely something. Maybe it's me coming out of reading a wholesome romance work or the expectation I had after reading Heartstopper and This Winter, but this book was not for me. I understand the perspective of mental health, especially at the age Tori is. I definitely saw the manic, the pessimism, the hatred, the overall everything sucks and nothing matters perspective. I once went through all of that myself. I think what this novel lacked in was overall pacing, and having a somewhat ridiculous plot line of teenagers pulling pranks to make their boring town interesting. The first part of the book was slow to build up the idea of what solitaire was. The second part had the same pacing up until the last fifty or so pages where it was go go go and nothing was stopping or slowing down. 
I also do appreciate the deranged connections Tori and Michael made throughout the novel. I guess because its a debut novel from years ago, this was the work that started it all right? I can appreciate that from this, we got something as great as Heartstopper. I do think that This Winter was much more better in terms of depicting Tori's perspective compared to Solitaire. I think if this was made into a different form of media like a film or even graphic novel, that would speak to a more relatable voice. I may also add that while reading, I did feel so drained or tired of Tori's pessimism. Maybe if I read this when I was her age, and was overly optimistic about life, I would even feel bad that she went through all of this. Now that I'm older and understand that yeah, life sucks sometimes, but keeping good people in your life will make it better, especially with a strong support system that doesn't contain other people who want to tear you down or understand you. 
I wish her parents played a bigger role, or at least another adult that Tori could confide in to help her. Her parents just seem like they don't understand teenagers as people and would rather leave them be when they are pretty much crying for help. 
I don't know, I'm sure if this were to be rewritten today or even made into a different media, it has potential to be better than the book. I appreciate that this book basically started the whole Heartstopper graphic novels and the success that's being made from it. I hope that future works of Alice I read will be more enjoyable for  me.