I'm not sure this is entirely accurate. Before we had abortionists, we had wire hangers and women inserting chemicals and other insturments in the attempt to abort the child. We also had unlicensed 'doctors'.
To eliminate this, we need to eliminate both Supply and Demand. As long as there is a 'demand', there will be a supply. Just like in the drug industry - without any regulation there is no safety for anyone involved. Any butcher can weild a knife, fork, bottle of Liq. Plumber, ect. And many have.
And then, there's the assumption the women were doing it themselves.