The girl my mother and I pulled from a flooded highway had a famous last name, a cut across her forehead, and one question for me before she would tell us where her father was: "Would you like a dad?" I thought she was joking. She wasn't. By the time the storm passed, her father had found us, and the three of us had been invited into a life of old-money houses, guarded grief, and choices nobody could make on a child's behalf. I wanted the father she offered, but I was afraid wanting him would mean losing the only family I had. Years later, when the people I loved were finally ready to call us one family, I still had to decide what that word meant.