My younger sister is 13. Her mother died when she was six and my (our) father had custody of her. He passed away in January of 2011 and left her in the care of his neighbors. I no longer get to see her and she now acts as if that is her only family, which breaks my heart. I have wanted custody of her since before his death. Is there anything I can do since I am a biological relative and, obviously the neighbors are not.
