Game of Thrones’ showrunners say Daenerys’ big decision was completely spontaneous

Warning: spoilers ahead for Game of Thrones season 8, episode 5, “The Bells”
Throughout the last season of Game of Thrones, writers and showrunners David Benioff and D.B. Weiss have been rapidly building toward the idea that madness runs in the Targaryen family, and Daenerys Targaryen might at any moment snap and become a dangerous tyrant. They say they’ve been seeding that ending since season 1 when she reacted with cold calm to her husband Khal Drogo executing her brother Vi