" It is Christian for the duped father to do something to see that the child is damaged as little as possible."
Bull
Sh@t. This man has no more responsibility for ensuring that "this" child doesn't suffer, than he does for the other billions (that’s billions with a B) of unfortunate children that are damaged who are not his.
He has no more moral responsible to this child than your husband does (if you are married).
I didn't use the word "responsibility." I used the word "Christian." Frequently these two words don't jibe.