The problems arose in the third trimester of Ani's pregnancy. Her kidney function began to decline. Doctors monitored her constantly, but saw no improvement.
Dr. David Cohen, the medical director of renal transplantation at New York's Columbia University Medical Center, noticed that "all of a sudden, from her perspective, things started to fall apart. We would go week by week, and when things really started to become problematic, it was clear that if we went too much further, we would endanger the mother and the baby."
The decision was to deliver the baby seven weeks early by Caesarean section. And if there was ever a doubt that Ani is a typically obsessive news producer, that was erased the day she gave birth -- Feb. 2, 2008 -- when she said to her anesthesiologist: "Don't forget to cue my husband."
She wanted to make sure that Wil had gotten the money shots with his digital camera.
The star of that moment was the girl they would name Madeleine H. Whitney. The H stands for hope.
"We were hysterical, crying for joy," Ani said. "And the most amazing photo came out of this."
"Our doctor is holding the baby out, and Madi's just reaching up into the air," Wil said, "like she's looking up to God. And there's a light coming down right on her. Little blessed baby."
Everyone hoped that Ani's kidney function would stabilize after that; it didn't. Measures of a chemical called creatinine, which indicates how well a kidney is working, were five times what is normal.
Mozian-Whitney and LeFosse had grown close helping each other through personal losses, and camaraderie at work, where LeFosse gave Mozian-Whitney most of her assignments.
LeFosse was one of the first to hear that Mozian-Whitney needed a kidney and would be facing the exhausting ordeal of dialysis for the first years of her daughter's life. The wait for a kidney in New York often takes two to five years.
Bob Brown wrote:in reply to one of Ani's e-mails, Joan sent one that was uncharacteristically short. It said, "Call me."
"So then I called her," Ani said. "And she kind of started crying, and she said, 'you know, I'm ready to donate my kidney to you.'"
Joan described Ani's response. "All she said was, 'really.' In the softest voice I've ever heard. And then we cried. And we laughed."
Luckily, the two women were a match. Things went smoothly until shortly before the surgery, when Mozian-Whitney developed antibodies that would have attacked LeFosse's donated kidney.
Then, Dr. Alan Benvenisty, director of the kidney transplant program at St. Luke's-Roosevelt Hospital, tried a rare technique to temporarily remove the antibodies in Mozian-Whitney's blood.
It worked, and to this day, the friends and colleagues are celebrating their good health.
Bob Brown wrote: Joan was back at work in a few weeks -- healthier, she says, because of all the dieting and exercise she did preparing for the transplant. Ani returned three months after her surgery, in September. "Now," she said with a laugh, "I have the energy to wake up when Madi's screaming for the pacifier."
ABC News' Bob Brown contributed to this report.
The Lawson family from Minnesota and the Cousineaus from California never wanted to be in the situation where they met.