How long has Agatha actually BEEN in england? A day? Two? She tends to move quickly even though it takes us months to get through each arc. So far it seems like dr beetle is the ruler who lasted the longest in her presence as she basically grew up there. Of course, he proceeded to last less than a few hours after her spark was unlocked by theft of her necklace. Maybe her spark has a special ability to cause the overthrow of the established order? The baron didnt last that long and he barely even interacted with her for more than a few minutes, though he didnt get removed from power for a reasonable length of time afterwards. Probably a resistance due to living among heterodynes for so long.