He's such a potent demon prince that even saying his name can be dangerous.
That was part of the price paid for her treachery by the demon prince.
"They are of no consequence," the demon prince assured him.
"So good to see old friends again," said the Demon Prince.
The Demon Prince could have warned me, but of course he didn't.
"You mean there are more beings like the Demon Prince?"
"Let him open his little box," said the Demon Prince.
"Illusions, from my own mind," she accused the demon prince.
Modra suddenly remembered something the demon prince had said to her the night before and cried, "No!"
A simple thrust with the knife and the Demon Prince would die.