"I am quite sane I assure you. However, if you do not believe me," she replied glancing at Evelyn's sword, "try to slay me. Cut me down as many times as you desire; I will not die. However... If you still do not believe me and refuse my challenge... I will give you a reason to kill me. Take a very good, long look at my eyes." She looked Evelyn dead in the eyes and pulled her hair back to reveal the silver earring seals. Her crimson eyes glowed brightly like a wild fire. 

Suddenly, the earth shook violently and walls of rock jutted up from the ground, surrounding the clearing. Nothing was getting in or out, Ruinil made sure of that.

"You see? I'm a demon. A monster in elven flesh. But fear not, friend. I shall not kill you right away. I will slowly and painfully tear your soul from your body and savor your screams until everything stops." Ruinil replied, wearing a twisted, toothy smile that revealed a pair of sharp fangs. "Now kill me! That is... if you can!"

With that said, Ruinil charged with a blinding speed. As her frightened opponent went on the offensive, Ruinil did not dare dodge and was impaled, straight through the heart by Evelyn's sword. Ruinil's scream sounded like a dying animal, but her screams quickly turned into a twisted laughter. Though, she was supposed to be dead, she was clearly still standing. Ruinil grabbed the blade of the sword and pulled it out of her chest, not a single drop of blood was spilled from her body. "You see? This is all just a dream. You cannot kill me. However, feel free to trying if you are so inclined." Ruinil replied, her crazed smile did not once leave her face.