Explain the rape/incest exception to being pro-life

[100% pro-life no matter what]

That has never made sense to me, because, if you are pro-life, you believe that the unborn baby is both living and human.  That would mean that killing it is murder.  The rape or incest was a terrible crime, but it wasn't the baby's fault in any way, shape, or form.  To me, that exception always seems like we are sentencing the child to death for his or her father's crimes.  Can someone (who comes from a pro-life perspective) explain this position that really doesn't make sense to me to me?

[100% pro-life no matter what]

Do you have any idea what kind of devastation forcing a woman to go through a pregnancy brought on by rape causes!? That's the kind of thing that tears a woman apart so deeply that she kills herself to get out. Not allowing an abortion in these cases is actively evil.

I wanted pro-lifers to be the ones answering this, because you don't view the act of abortion as murder.  Because, if you do view it as the exact same as shooting some guy on the street, the rape exception makes a lot less sense.