Ren tilted his head in response to her insults. She was the one who looked more like an little child with her body. He decided not to voice that thought, though he was tempted too. As she asked him why he did that, though he did note the rosy color of her cheeks that had darkened like crazy withing a few moments. Now who was the child? He simply offered a shrug in response, before he actually responded.
"I've never seen horn such as these before." He responded simply, in a matter-of-fact tone. He wasn't one to ask permission to do something when it could be done. Simple as that.
Though then even more curious, he gently took the scabbard from her hands, and sheathed it fully to see if the horns would go back in. Then he unsheathed it, and sheathed it again as the girl spoke her supposed name. He didn't look up from his actions, as he responded back to her.
"I asked your name, not what other people call you."
He doubted that was her real name, after all he had heard rumors of this "Rin" girl, and he knew that the people who spoke of her didn't actually know what her name was. Also, with the fact that she took so long to anwser a simple question further gave away her name she had just spoken was fake. He continued with the sheathing, and unsheathing of the girl's sword, as he watched her horn appear and disappear. After all, when would he have another chance like this?