The dialog was completely butchered and dumbed down for J6P.
Book Dialog
Èowyn: Begone, foul dwimmerlaik, lord of carrion! Leave the dead in peace.
Witch-king: Come not between the Nazgul and his prey! Or he will not slay thee in thy turn. He will bear thee away to the houses of lamentation, beyond all darkness, where thy flesh shall be devoured, and thy shrivelled mind be left naked to the Lidless Eye.
Èowyn: Do what you will; but I will hinder it, if I may.
Witch-king: Hinder me? Thou fool. No living man may hinder me!
Èowyn: But no living man am I! You look upon a woman. Éowyn I am, Éomund's daughter. You stand between me and my lord and kin. Begone, if you be not deathless! For living or dark undead, I will smite you, if you touch him.
Film Dialog
Èowyn: I will kill you if you touch him!
Witch-king: Do not come between the Nazgûl and his prey.
Witch-king: Fool... No man can kill me... die now...
Èowyn: I am no man!