First, I actually read the book. Secondly, I am a Roman Catholic, but I do have Jewish ancestry, which is what inspired me to read this book.
The author is very young and sometimes her writing seems amateur and immature. Other times, she seems to contradict herself, almost as if she is still having trouble parting with her faith; she probably is. Her upbringing, culture, and faith are her foundation and questions, parting with, and being highly critical of that foundation would make most wobble a bit and appear to make contradictions, especially at the age of 24.
That being said, she does a good job introducing the reader to a world and culture usually closed to outsiders; the world of the Satmar. Some of her claims seem unbelievable and far-fetched, such as a story about a man that kills his boy when he catches him masturbating. What makes this story even more unbelievable is her claim that the Jewish emergency service helped him cover-up the killing of his child and dispose of the body. This story is obviously not true. The author doesn't claim to have witnessed this event, but instead, she claims that her husband was told about this, from another source. I can see how someone raised in a culture that shuns televisions, the English language, newspapers, and just about any form of media, could easily be led to believe such a story. It is possible that the author made up this story to embellish the book, but it is more likely that she was told this story, by someone she trusted, and she was gullible enough to believe it.
This story is about a culture that turned insular, in an effort to survive and became repressive and oppressive. I was surprised to learn that orthodox Jewry in the Old World, in Europe, prior to the Holocaust, was not as strict as that which is practiced by the Satmar, or others that are referred to as Ultra-Orthodox. The Holocaust caused, for some, a reflex reaction, a desire to be a perfect Jew, in the hopes that God would reward by ensuring that another Holocaust never occurs.
The author's family is also very dysfunctional and would probably be so if they were Christian, Muslim, or any other faith. The more repressive aspects of the Satmar culture, especially with regards to women, probably worsened the author's upbringing, but these cultural aspects were being interpreted by damaged people.
As long as one keeps these facts in mind, you can read this book and learn quite a bit about Satmar culture. Don't condemn an entire culture because of one family. Don't forget that most Americans are not very many generations removed from a time when women were not equal in the eyes of the law and African Americans could be beaten for using the wrong drinking fountain. Every culture has its fair share of issues.