Your argument is that because the women did not have a choice to have sex and was raped that  it is morally justifiable to murder the child?  The women did not have a choice so the child does not have a choice?  

Explain to me the logic of murdering an innocent child based on the crime of its father.

Wouldn't it be better to punish the rapist?

Even if I could grant that abortion is morally justifiable in cases of rape, that does not mean it is morally justifiable outside of these extreme examples liberals love to come up with and act like that is the norm.