Dotson said that Margaret started to have breathing and heart problems after the abortion, and that he was unable to revive her. He declared her dead at 3:30 PM of cardiopulmonary failure.
An autopsy revealed that Margaret had suffered acute sickle cell crisis triggered by the abortion. The other women I've identified as dying from sickle cell crisis triggered by an abortion are Sheryl Roe and Betty Hines.
As you can see from the graph below, abortion deaths were falling dramatically before legalization. This steep fall had been in place for decades. To argue that legalization lowered abortion mortality simply isn't supported by the data.