Claim: Stephanie Daley debuted at the 2006 Sundance Film Festival.

Stephanie Daley -- retitled What She Knew for US television -- is a 2006 film starring Amber Tamblyn , Melissa Leo , Tilda Swinton and Timothy Hutton . The film , which received a limited release in North America on April 20 , 2007 , focuses on the issue of teenage pregnancy . Stephanie Daley was developed at the Sundance Writers ' and Filmmakers ' Lab , and premiered at the 2006 Sundance Film Festival , where it won the Waldo Salt Screenwriting Award . The film also earned Tamblyn a nomination for best supporting female at the 2006 Independent Spirit Awards and the Leopard prize for best actress at the 2006 Locarno film festival .