Where She Went by Gayle Formen is the sequel to If I Stay. If you enjoyed If I Stay (which i'm assuming you do, otherwise why are you checking out the sequel) Where She Went was a satisfying sequel. SATISFYING SEQUEL. Not something I've said a lot, a lot of sequels don't live up to the first book, this one does. If you have indeed read the first book, we know that it left you on a cliff.
This book starts off disappointing, in my opinion of course. Mia and Adam.... needs to happen. Mia taking off and leaving her past (Adam included) behind? NO THANK YOU. However I am the type of person who needs to keep reading to find out what happens next even if the story is not going the way I want it to. As fate may have it the former couple wander into each others lives again and if you want to know what happens, read the book.
What I will say about the book is that your questions will be answered, if not at first have patience. Answers will come. I was frustrated at the beginning, but once I read further I forgave Mia for how things went down and I grew sympathetic for her. The girl has/had a lot of stuff to get through, mentally and emotionally. We are once again thrust into the memories, present, memories present etc pattern that was established in the first book. I felt that the memories were a little more jarring and forced than they were in the first book (feel free to disagree), but overall I can't complain. This was a satisfying read, and concluded very nicely for my liking. If you've read If I Stay, continue on the story needs to finish for you to get the whole experience of what Gayle Formen was trying to achieve.
I would definitely recommend this book to readers who enjoyed If I Stay.