What language does she speak, maybe the book has been translated into that language.
ABA and the Homotoxology are very hard to do without trained specialist helping.
I've heard good things about this sight, however I have not needed to order anything because we have a local ABA program.
http://www.difflearn.com/This forum is very helpful in regards to cutting out all gluten and dairy. We also limit soy. And some family eliminate corn, sugar, and eggs as well.
http://health.groups.yahoo.com/group/gfcfkids/If there is a natural doctor of some kind out there, perhaps they can help her too.
My son takes Wobenzym N to help with digestion, but this is something she would need to see a doctor about.
I hope this helps