Wikipedia claims that the topic of Day 2's stories is decreed by that day's queen, Filomena:
Filomena reigns during the second day and she assigns a topic to each of the storytellers: Misadventures that suddenly end happily.
Is this true, and when does she make such a decree? The Day 2 introduction doesn't say anything about it, and the day's first storyteller Neifile says (emphasis mine):
Often has it happened, dearest ladies, that one who has studied to raise a laugh at others' expense, especially in regard of things worthy to be had in reverence, has found the laugh turn against himself, and sometimes to his loss: as, in obedience to the queen's command, and by way of introducing our theme, I am about to shew you, by the narrative of an adventure which befell one of our own citizens, and after a course of evil fortune had an entirely unexpected and very felicitous issue.
The theme of "Misadventures that suddenly end happily" is indeed followed, but is Neifile alluding to this theme being decreed by the day's queen Filomena, or does "in obedience to the queen's command" refer to her starting her story rather than to the theme she's introducing?