I don't think even those who want the woman to "rot in jail" can figure out a way to punish women for something that was legal when they did it. Illegality would not be retroactive, much as some might wish for it to be possible.
I agree with you totally. I guess I want people who would condone a mass arrest of women for having an abortion to think about the reality of such a thing. Though I'm probably just wasting my time.