LOS ANGELES -- On a recent afternoon, Cat Pierce, a musician and artist, stood in the living room of her East Los Angeles home negotiating with her 4-year-old, Lenora, aka "Lenny," about going to the park with her father, Stephen Werner. But Lenny burst into tears at the prospect of leaving the house without her mom. "I spent $100,000 to get pregnant," said Pierce, 48, after they left.