Strikes me as a rationalization, but you word it well.
OTOH, the “mother” in the case could be considered the prime mover in the homicide of the unborn child, with the doctor being only an instrument she uses. The closest analogy I can think of is a wife who hires a hitman to off her husband. The plea that the wily hitman exploited her innocence is just a tad difficult to carry off.
I freely concede that what you're saying is morally accurate (rare is the woman who would believe that her busband is just a mass of cells of dubious humanity) --- but I think what I wrote still stands: you can't shut down the abortion industry without going after, principally, the abortionist, with postabortion women as accusers and not as co-defendants.
And you're never going to be able to prosecute women who engage in do-it-yourself abortions with a handful of OC's.