alexander says the baby suffers from potter s syndrome. it s really rare. really rare. one in 60,000 i think. the doctor he just said, it s, it s just like he said, this is not compatible with life. she is not going to live. as he was saying it i could feel her moving. reporter: inside her the baby was kicking. almost as if she disagreed with the doctor. there are a lot of parents who would hear that from a doctor. uh-huh. uh-huh. reporter: and make a choice to terminate? we knew that the butlers, all three of them, chose to fight for abigail s life. potter s syndrome caused by a critical lack of amniotic fluid meant the baby s lungs and kidneys couldn t form properly. the butlers found a specialist willing to infuse saline, replacing the amniotic fluid.