Reddit reviews Banished: Surviving My Years in the Westboro Baptist Church

But when her formerly liberal and secular father set out to produce a documentary about the WBC, his detached interest gradually evolved into fascination, and he moved the entire family to Kansas to join the church and live on their compound.

I can recommend a few things. For some reason I like reading books about people who have escaped from fundamentalist sects. These may not be exactly what you're looking for but you might want to give them a try.

• I Fired God: My Life Inside - and Escape from -the Secret World of the Independent Fundamental Baptist Cult by Jocelyn Zichterman. This is a book written by a woman who grew up in the IFB church (the same kind of church the Duggars belong to) and she talks about how abusive her childhood was because of it. Eventually she and her husband leave the church and have to cut off contact with her family.
  
  
• Banished: Surviving My Years in the Westboro Baptist Church by Lauren Drain. Lauren's family joined the WBC when she was a teenager. She was later excommunicated and had to learn to make her own way in the world. The rest of her family still belongs to the church.
  
  
• Cut Me Loose: Sin and Salvation After My Ultra-Orthodox Girlhood by Leah Vincent. This is actually about a woman leaving ultra-orthodox Judaism but her struggle with no longer being part of the only world she's ever known is very similar to what I've read in books about people leaving Christianity. It's a brutally honest memoir but it the ending is happy.
  
  
• Keep Sweet: Children of Polygamy by Debbie Palmer. This one is written by a woman who grew up in the fundamentalist Mormon community of Bountiful. She suffered some severe abuse in both childhood and and as an adult. She made her escape when she saw the same things happening to her children.

I just read the book by a young woman who left the church. It wasn't great literature but interesting. Also, the girl ended up being one of the ridiculous photogenic memes.
http://www.amazon.com/gp/aw/d/1455512427