What if the abortionist intends to kill Christians' children?
Well, for starters, it's not sufficient for martyrdom that the guy who shoots you hates Catholics. YOU have to be WILLING to die for Christ. A Catholic who is taken to the Colosseum kicking and screaming is not going willingly, and so it cannot be construed as an act of love. He is not "laying his life down" for the beloved, but rather is having it taken from him unwillingly. This is not martyrdom.
The woman who goes to the abortionist is in a state of automatic excommunication and has been cut off from the communion of the faithful. She is complicit. The abortionist is complicit. WHERE
is the perfect contrition, the perfect act of charity, the willingness to suffer for Christ, the implicit/explicit faith, intention to receive baptism, etc., etc., etc., coming from