I do love that it's canonical that when princess Natalia is happy flowers pop into existence. It such a cute, and on-brand, way of incorporating a staple background effect into the "real world" of the manga. Other times you'll get characters who will comment "I swear just saw flowers blooming" or such (especially when the artists go crazy and choke a panel with them), but I'm eagerly awaiting Sister Sara to catch on - that should be quite the arc.