Hi. I read your story: "I need some advice. It all started at around 18 months of age. She started to have night terrors. Gradually they started to subside but her tantrums started."
On the spiritual side did you know that an unwelcome spirit could have entered your daughter. I mean this because of the sudden change of behaviour. I know a person who for years as a child i could not sleep on his back because if he did he would see a dark shadowy figure hovering over him. He woke up each time before anything happened. So he used to sleep on his side always. These days as an adult he doesn't have that problem.
If you like, take your child for prayer or deliverance prayer. See a Pastor who does this and get some advice on it.
If you don't believe in this stuff then google it.
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