The child has been defrauded as much as the man. Here she thought she had a mommy and a daddy, now surprise! no daddy. To have your father snatched away is indeed a measurable harm. And the mom IS responsible for that. But, if the dad suspected fraud and didn't DO anything about it in a timely fashion, then he is responsible too. The parents need to make sure that the child is made whole, in proportion to their fault.