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Prudence may be in way over her head!

In this sneak peek from Sunday's brand-new episode of The Royals, Queen Helena visits the former palace maid and King Cyrus's pregnant future bride to warn her about the dangerous pitfalls of the monarchy. "I promise I'm here out of concern for you and your son," she says sincerely. "Cyrus is a dangerous man."

"I know everything I need to know about the King," Prudence curtly replies.

"But hear me as a mother," Queen Helena continues. "Royalty is irreversible. If you expose your son to this life—to this world—there's no going back."

Cyrus' fiancée snaps, "My son is going to enjoy that same life that you have and once I marry the King I'll be Queen and you'll be irrelevant." Ouch!

Watch the clip above to see how Queen Helena reacts!

Don't miss an all-new episode of The Royals this Sunday at 10 p.m., only on E!