The Return of the King
"Your duty is to your people," [Aragorn] answered.
"Too often have I heard of duty," she cried. "But am I not of the House of Eorl, a shieldmaiden and not a dry-nurse. I have waited on faltering feet long enough. Since they falter no longer, it seems, may I not now spend my life as I will?"
"Shall I always be chosen?" she said bitterly. "Shall I always be left behind when the Riders depart, to mind the house while they win renown, and find food and beds when they return?" (5.2.110-11, 113)
"Hinder me? Thou fool. No living man may hinder me!"
Then Merry heard of all sounds in that hour the strangest. It seemed that Dernhelm laughed, and the clear voice was like the ring of steel. "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." (5.6.14-15)
The winged creature screamed at her, but the Ringwraith made no answer, and was silent, as if in sudden doubt. Very amazement for a moment conquered Merry's fear. [...] A little to the left facing them stood she whom he had called Dernhelm. But the helm of her secrecy had fallen from her, and her bright hair, released from its bonds, gleamed with pale gold upon her shoulders. Her eyes grey as the sea were hard and fell, and yet tears were on her cheek. A sword was in her hand, and she raised her shield against the horror of her enemy's eyes. (5.6.16)