I don't understand why do people still attempt to solve cases as old as this. It doesn't do good to anyone. Parents, friends and other relatives of this girl surely got over her disappearance within those 20 years. If the little girl was killed then she will be found dead and only make all relatives re-live the horror of this disappearance, and if she is still alive she probably has her own life now and she surely wouldn't want to go to her "real" family after growing up for 20 years with someone else. People should learn to let go and forget instead of chasing ghosts.