Woman imprisoned by father for 24 years!

I’ve been following the news story that came to light last week about the Austrian woman who was kidnapped and imprisoned by her own father for 24 years!  She was imprisoned in the basement of the family home.  During that time she was sexually assaulted repeatedly by her own father and ended up having seven children by him!  Once the police became aware of the situation, the woman and her children were rescued and the father arrested.  The police have inspected the basement prison where the woman and three of her children were kept and say that the conditions were “oppressive” and the oxygen levels in the rooms were so low that they could not safely stay in the rooms for more than one hour.  That makes me wonder how the poor woman and her children survived!  I wonder if there was any kind of brain damage as a result of oxygen deprivation.  And I really find it almost impossible to believe that the wife of the man who did this says that she knew nothing about it!   The woman who was imprisoned states that her father sexually abused her since she was eleven years old, but did not imprison her until she was nineteen.  So she was sexually abused for eight years before she was imprisoned, and the mother had no knowledge of that?   How can you live so many years in a house and NOT realize that something weird is going on in your very own house before the imprisonment and then later on in the basement?  That sounds very suspicious to me!  I don’t believe it.