A "teller of stories" has another connotation where I am from. They are also called Liars.

[ But what if one was so empowered by lies that they could become truth? Thanos is skeptical of what Loki says, but he is intrigued. Perhaps in another place, the Asgardians are really truly Gods, instead of merely pretenders. If there really was a woman who had complete control over death, he might very much like to meet her. If only because she could accomplish everything Thanos was trying to accomplish, with a snap of her own fingers. ]

Let us presume we are in your story instead of theirs. Is your power total as the story teller? Can a character seize agency from you in some way?