[Chena]

I wonder if the mother and other "father" are dead? Perhaps killed by the "father" who took her from her home and abandoned her?

[CaptainK]

The boyfriend went to the police station to identify the girl. The natural father left the girl on the street barefoot, late at night. He told her to look for a house with a black door and she would find her mother there. My guess is the natural father killed the mother.