This may be tough for you to hear but here goes: If a woman is voilently ill because she sees you and you remind her of her rapist, should you be put to death? The idea is nonsense. Two wrongs don't make a right.
Yes it is horrific, troubling and painful, but taking a clearly helpless and innocent life because of someone else's act is itself horrific.
I cannot imagine the pain a woman may feel finding out she's pregnant from a rapist. But I'm pretty sure it does not compare to the piecemeal severing of limb and life of an innocent child. The stopping of a heart because of heart break and pain seems crude and somewhat unenlightened.