Before I Fall- Reading Skills Redo

In the book, Before I Fall, I decided to redo my reading skills for it. I'm confused on the theme a little bit. I think it's supposed to be how she wakes up everyday for a week re-living the same exact day, which the day is the day she crashes her car with friends, and tries to fix it. But, I'm not sure because the book is giving me mixed messages about it. Also I found out that this book is a lot like Pretty Little Liars, because they are both suspenseful. I also think it is a lot like 13 Reasons Why because they are both about how a girl lives her last days alive, but the difference in 13 Reasons Why is the main character is the reason for her own death. I also think that Before I Fall is fantasy, so I cannot relate it to anything in the real world! But, I do think that people are making a lot of books about how people die, but before, something magical changes their lives, just to make it more interesting!