From the information given, details that are used by the author to support the central idea about how her mother felt about the dictator include "doubly revolted", “obsession" and "cautionary tales”.
A dictator is someone who has power in a country and behaves as he wants. Such a person doesn't listen to the advice of others.
The mother disliked the dictator and this made the author used words like doubly revolted", “obsession" and "cautionary tales".
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