According to news accounts, this little angel had planned to kill this woman's children and the final straw came when she found him setting a fire in his room, intending to burn down the house. Now, would you be inclined to keep this child? How about looking into the future when this psychopath is a full grown man? Still interested?
We’re all sitting here at our keyboards making judgments with limited information. If the kid was behaving in a criminal manner, then she was right to get him out of her home and protect the kids that were there already. But he’s not a dog you get from the pound and when you find out he bites, send him back. At the very least, taking him to the local social service department and describing his behavior and surrendering him to them would be a good start.