The Girl in the Park (2007)

Synopsis
A socially isolated woman still haunted by the disappearance of her three-year-old daughter 15 years ago obsesses over the prospect that a troubled young woman whom she has recently befriended may in fact be her long-lost daughter in The Lake House director/screenwriter David Auburn's affecting psychological drama. Susan Sarandon stars as the long-grieving mother, and The Devil Wears Prada's Emily Blunt stars as the mixed-up teen who becomes the object of the dejected woman's hopeful fixation. ~ Jason Buchanan, All Movie Guide