I'm not sure if she told him but in her backstory we know that she actually almost died because the villagers set her place on fire and chained her to a table and the fire spread because of the weeds that burn easily (? kinda forgot if they set her house on fire but I think so). And in fact in her desperation she traded the souls for immortality this resulting in the entire village fire. Please correct me if I'm wrong, I have no desire to search through all the shitty Caidel episodes