. >> reporter: like jessica kern, who says she spent her entire childhood in the dark, wondering whyked so different from the woman who was raising her. eventually discovering her biological mother was the surrogate and went about tracking her down. >> i know exactly how much she earned for delivering me. >> how much was it? >> $10,000. >> you believe she was motivated by money. >> you can't say that's not motivating. >> i think one of the most important things for people to remember when they talk about unconventional ways to become parents today is a lot more goes into being a parent than biology. it's very important to remember that. because people can get very, very emotional when they talk about these types of issues. the medical ones are straightforward. the social ones get a little trickier. >> empowered women can say -- >> empowered women can make their own choices. >> reporter: but even with all the evidence lahl cites, she's still got her critics. >> why can't you tell us how much money you were paid? >> are you not sympathetic to couples who are infertile or to same-sex co