Sam couldn't get rid of her out of his head, no matter how much he tried. He is feeling extremely frustrated because of this.
He left the forest surrounding the Mountain sword sect and started walking alongside a stream calmly to clear his mind. But it was as if she took residence in his head. He couldn't get rid of her words no matter what.
The words misfortune, fortune, and destiny are all playing around in his head. He couldn't get rid of them no matter what.
He couldn't get rid of the vibrations caused by her voice in his soul.
He didn't want to experience it again. For a freak like him who likes to have everything under his control, it is already bad enough that he lost his body and everything else that is related to him. He is just getting used to this life.
But now, there is someone else who could just directly go on and play around with his mind. He could take it.