This is just horrifying. It's hard to believe an adult in the twenty-first century who could use a computer would write this.
You believe that mental illness is caused by demons, and refuse them medical help. This is pure child abuse. In a civilized country, you'd be in jail and your church would be shut down.
You believe in an all-powerful, benevolent God. So why would He create demons to torture children? I think people simply project on God - "If I were God, I'd torture a lot of people."
Mental illness has been documented for centuries to distort people's voices, beyond recognition.
Hysterical strength in the mentally ill, as well as in regular people in emergencies, has also been documented for centuries.
And the reason she perked up when she heard Jesus is because she's a Christian, not because of some supernatural crap.
Let me reiterate - your refusal to give medical treatment to a sick girl would be a crime in most places in the world.
Has it occurred to you that you actually worship the Devil? This would account for absolutely everything.
You horrify me. You are a true monster. I hope the authorities step in and make sure you are never allowed contact with children again.