Needs a Trigger Warning and background information

My first thought was that this needs a suicide trigger warning. Secondly...I was pulled in but I am also confused. I want to know more...why did she hang herself when she knew her song was coming home...who is this woman? Why is Jack there? There are so many questions and maybe they are answered later on but I just feel almost lost in the book to begin with. Then We are taken back to when Jack was in school...is this when he first met the woman? There are just too many questions for me to feel like I want to continue. I do want to read and find out what happens but at the same time I am already so confused and lost in the story.