Ok. I don't think Numbers 5 is actually as you describe, but I'm not an expert on anything biblical. It seems that passage is addressing the consequences of adultry, not how to perform abortions.Yes, which resulted in an abortifacient if the woman was pregnant and could even lead to a uterine prolapse.
The other passages were cited to give a background to the basis for how Sotah could be seen as justifiable within the Old Testament worldview.
They were also cited to reference a well-known theological position within both the Jewish and Christian traditions. A position that has been downplayed (or outright ignored) by conservative Christians since 1973.
Are you familiar with Didache? How about Saint Augustine? Tertullian? Scribonius Largus? Hippocrates? I'm not sure that conservative Christians base everything on bible as a literal application. The understanding of when life begins has changed a bunch since biblical times. With no understanding of fetal development, many people in biblical times and before were unable to answer that question like we can today.