Final answer:
Lady Lesso termed Sophie's betrayal of Tedros in the Trial by Tale as 'The Ultimate Betrayal', marking a significant plot point.
Step-by-step explanation:
Lady Lesso named Sophie's betrayal of Tedros during the Trial by Tale as 'The Ultimate Betrayal'. This moment highlighted the gravity of Sophie's actions within the trial and underscored the consequences of her decisions. It serves as a pivotal point in the storyline, affecting the development of characters and the overall narrative arc.