Of course he is. He's being brutally murdered, deprived of his unalienable right to life, simply because of a criminal act committed by another person, his father. No other reason.
The blood is on his hands.
Only if he kills the child. Otherwise he's a rapist, one of the most vile, despicable creatures there is.
Making the mother into a murderer does absolutely nothing to mitigate that heinous act whatsoever.
Two wrongs do not make a right. Never have, never will. Didn't your parents teach you that? That's like parenting 101.
Tell that to the Nagasaki, Hiroshima, Dresden, Berlin, and Baghdad dead.