Melanie Thernstrom, author of The Pain Chronicles
Fie McWilliams, gestational carrier for Thernstrom's daughter, Violet
Liza Mundy, Washington Post staff writer and author of Everything Conceivable
After several failed attempts at in vitro fertilization, Melanie Thernstrom and her husband, Michael, chose to have children with a surrogate. So that their kids would be the same age, they chose two surrogate mothers to carry eggs from a single donor. She calls her son and daughter "twiblings."