Dr. Kristin Lyerly’s placenta detached from her uterus when she was 17 weeks pregnant with her fourth son in 2007. Her doctor in Madison, Wis., gave the devastated recent medical school graduate one option: to deliver and bury her dead child. But she requested a dilation and evacuation abortion procedure, knowing it would be less invasive and risky than being induced. And she couldn’t fathom the agony of holding her tiny dead baby.