Nothing had prepared her for this. Jennifer Johnstone was a healthy 26-year-old, 35 weeks pregnant with her second child, a girl, whom she and her husband Scott had already named Madison. She had ultrasound pictures of Madison too. One showed her so tiny that it was difficult to see her as anything but an outline. In another, Jennifer could almost see her daughter's smile. "This is your baby sister," she'd tell Cameron, now age 3. "Do you want to feel her kick?" she'd ask, taking his hand and guiding it with her own.