See, I think that by making all abortions illegal you run into another moral dilemma.
Both your scenario and my scenario are flawed. In your scenario you might still get into an issue of mother's life vs. child's life
at which point you need to decide which life you value more
Or, you allow abortions in the unique situation that the mother's life is being compromised.
Just a fun thought...and, if you say it's okay to abort a child to save the mother's life, then one could argue you are violating a moral standard that is no worse than me saying that I'm advocating pro-choice first trimester abortions, or abortions in circumstances that will save a mother's life.
But you haven't said any of that, so we will see where this goes.
