You bring up excellent points.
Certain cases through out history have the angels repeat only what a Godly angel not fallen can declare.
A fallen angel spirit can not declare in the personal pronoun a belief in what sums up to be 1 John4. In like Fatima the spirit that Declares it is The Virgin Mary recites the Apostles creed and the Gloria which can not be declared by a false spirit. So I believe if the reports are accurate that it was the Virgin Mary.
I have personally met a new ager claim to be a Christian. I challenged her to declare the Apostles or Nicene creed in the personal noun. Also that divinity in Jesus became human/flesh. She could not do it. The entity in her would not allow her to say it. She had contortions then declared there were many gods.
What we have to remember is the devils are already judged as Jesus declares in the Gospels. They can not and will not be able to say what a Holy Spirit person can declare as 1 John4 requires. They have no chance of redemption ever.
Not that this would happen, If I ever have an apparition I will cover the blood of Christ then if it continues. It will have to declare The Apostles creed/Nicene creed 1John 4 requirement.
Praise Jesus who came in the flesh!! Amen!!
Freeper Cheers in Christ!!