I just thought of something. At the beginning of Keep Calm and Flutter On, the gang is waiting for the appearance of Celestia. With an "important guest". Just chilling, in the middle of a field. No neurotic behavior, no freaking out about messed up signs, no mental breakdowns whenever swarms destroy the town. Yet, Twilight hasn't really shown signs of chilling out when it comes to her neurosis. The season 3 two-parter proved that.