They are either people or they are not.
Do we kill an innocent person because we think that, if they live, another person might die?
We do not.
“Life of the mother” is basically a lie, anyway. Our surgeon general C. Everett Koop said he knew of not one instance when that was truly the situation.
See my # 8.
I am pretty sure Koop was referring to late term abortions where I agree with him. That said I think that actual cases where a legitimate threat to the mother’s life can be cause by pregnancy is uber rare. Once upon a time that was not so. But in the modern world it is so rare as to be statistically insignificant.