His question is a honest one for discussion.
When does human life gain its value? Is it variable or a constant?
I am not going to go into the right or wrong moral aspect of abortion. That is not for me to decide for others.
I am curious however as to how we as people view the human life from conception to death.
Does the tragic loss of a child through miscarriage aka spontaneous abortion mean less and have less "life" value than the tragic loss of a toddler or a first grader?
d'uh.
we just lost a fetus due to spontaneous abortion.
that sucks, but it is not at all comparable to the situation where my toddler suddenly dies.
why is this such a different concept.
there is, after all, a difference between a toddler and a fetus.

So very sorry.
Not to the parent who once held her almost full term child it did not. (Not myself for the sake of truth.) But you do address the disproportionate value to life we often do apply. Certain losses of life seemingly give us more of a collective grief unity.
By the way, what is the difference between a fetus and a toddler other than they are both dependent on others for their life? I do not mean legally, I mean emotionally.
Just curious, if one of those shot at the school had been a pregnant woman shot in the belly and she survived but her fetus did not would the dead fetus have the same life value as the dead little children in the classroom? The answer to that might offer some interesting insight for each of us.