although i was nt asked to reply but after reading ur post i am forced to reply.
what is controversial in this book ? main idea of this book is "halal" and "haram" which coud be justified in moral and religious values (as there is concept of HARAM and HALAL in islam also.
If you dont know why BANOO APPA wrote this book, read her interview,in which she has described whole story and u can describe it also while defending this book.