Final answer:
The Nemesis Dream symptom Sophie experienced after Tedros chose Agatha is not described in the provided texts, and without the correct reference, an accurate answer cannot be given.
Step-by-step explanation:
The Nemesis Dream symptom Sophie experienced after Tedros chose Agatha over her is not explicitly mentioned within the provided texts. It seems there may be some confusion with the subject matter. The excerpts given are from different literary works and do not pertain to the characters Sophie and Tedros, nor do they describe a Nemesis Dream symptom. The symptoms of a Nemesis Dream, or any reactions from Sophie due to Tedros' choice, cannot be identified from the given information. If the question refers to a specific book or series, such as "The School for Good and Evil" by Soman Chainani, there may be relevant information within that context. However, without the appropriate reference, providing an accurate answer is not possible.