I enjoyed reading this book and got really into the story. I liked the overall plot and general idea/message(s), but there was too much focus on sex. I guess detailed descriptions of (hetero) sex is just not my thing. Another thing I found critical was the fact that Anna's musical career/path seems quite unrealistic, and the way she talks about music (for instance calling violin pieces for "songs") made it hard for me to see her as a violinist.
Despite these two flaws, however, I enjoyed the book. Some of her struggles were relatable and the first person narration gives the reader a close connection to both Anna and Quan. 
I'd recommend this book to young adults, especially if they want to know more about the effect of "masking" and ASD in general.