Ribena, I simply can't agree with you about the OP story. If the concept had any validity at all, it would make suicide a possible crime for a wman - but not for a man. That automatically affords unequal rights, at the very fundamental level of rights over one's own life.
While I take your point about how you'd feel if someone killed your baby in utero, this principle couldn't be logically taken forwards because of the possibility that a woman may or may not be pregnant. It's thankfully rare that an agressor deliberately targets the unborn child (in civilian life, this is sometimes attempted by a partner) and there are legal provisions for it.
Your argument goes to the heart of the abortion debate: if it's murder to kill an unborn child, then abortion is murder ...