You failed to address my second piece of evidence.
Ireland's rate of 2 per 100,000 would tend to suggest that either (1) In the U.S., non-life-threatening pregnancies are more likely to end in abortion than life-threatening ones, or (2) some factor other than abortion causes Ireland to have a maternal fatality rate 1/6 that of the U.S.
If Ireland's lower maternal fatality rate was due to factors other than abortion, any attempt to judge the effect of abortion on it would be meaningless. If the lower rate is due to the abortion ban, that would suggest that life-threatening pregnancies are kept (versus aborted) at a disproportionate rate compared to non-life-threatening ones. I suppose that's possible, but it seems unlikely.