There's a lot to love about this one.
--The setting: Not too many books (none that I've encountered) are set in Austria during the Bosnian civil war, and we are lucky enough to travel to this time and place with a sweet 12-year-old girl and her equally loveable found family. She is curious, asks important questions, and the reader learns in an age-appropriate way that atrocities are occurring in Bosnia, the victims are leaving their land seeking asylum elsewhere, and the countries who at first were eager to take them in become increasingly concerned about the number of refugees and their ability to accommodate them (the ones that are not wealthy, that is). Becca's stay in Austria coincides with a potential turning point, where legislation is being proposed to keep the country "pure" as a way of controlling the situation. This is interesting history, and Levine helps the reader make connections between what is happening here in the 1990's to what happened in Nazi Germany which ultimately may lead the reader to see similar patterns in today's world. I love when Becca wonders if laws that seem perfectly acceptable today will in the future seem horrible, like how Slavery was once legal and now everyone can see that it was wrong. Readers may be prompted to think critically about government and legislation, and they'll definitely be prompted to see refugees as human beings needing help rather than as parasites clawing their way into countries to do damage.
--Mental health, anxiety: Everyone experiences anxiety sometimes, but some people have real problem, an anxiety disorder that needs treatment. Becca is one of these people for whom anxiety has taken control and ruined her quality of life. She has a great therapist and coping mechanisms, and as she works on herself throughout the course of the story, she benefits from the support and tips from her new friends who also experience anxiety and fear (but in healthy doses) and she uses what SHE has learned to help them. It's a sweet little support group they create, and I love that every single character in this book is healthy, positive, helpful, caring, supportive, and brave even though they are normal. There are no mean girls, no bullies, no villains, no abuse. Any child who experiences occasional anxiety or even those that have too much will find help from the everyday experiences that occur in this book.
--Culture: I loved seeing how things are different in Austria! Or, at least, how it was different from American culture in the 90's. Readers get to take a virtual field trip to Vienna and Prague with a character that is not eye-rolling and dying of boredom the whole time. Becca is not one of those exceptional children who totally geek out on history and museums; she's a healthy tween with a normal amount of curiosity and interest in the world yet still has a lot to learn. Readers will learn right along with her that you have to pay to use the bathroom there, that water is not free when you eat out, that recycling is a much bigger deal because the government there cares about the environment, etc. They'll also see what is the same everywhere.
I learned nothing new about the Bosnian war because I just read an actual memoir from a survivor, but I think it is enough for this audience, just right.
I highly recommend this to middle school students. While I was never bored, it does really start to pick up about 3/4s through, and then it's hard to put down.