It makes no sence to me that a mother, even if she had an affair with some creep, would to her dying day, shield the perp. There is nothing in Patsy Rameys back round that would suggest she was that indifferent to the fate of her daughter.
I agree. Making up stories to fit a "mom's guilty" or "dad's guilty" scenario is getting old. People should just admit that a person outside the family was a pedophile creep all by his lonesome and didn't need "help."