Lilly and Thomasina have a lot in common. They’re both 8 years old. And they were both born boys, although it became clear pretty early on that they'd prefer to be girls. There aren’t all that many kids in the world like them, but recently, at a conference in Seattle on transgender parenting, they met. And they immediately hit it off. They could talk about things with each other that they'd never been able to share with other friends back home. And that’s comforting, even if they never see each other after the conference ends....