A few moments ago, while Daimon's group was dealing with the creature which appeared, and made them change the plan just a bit, not outside of Daimon's expectations, at the contrary direction to Warhammer city, there was the territory of the Delphini family.
Well, it could be said the original territory of the Delphini, because Annete as the queen had her own territory whose capital was Crystal Reef city, and it was right next to the territory of Vincent.
In other words, the Delphini Duke literally had to go through Vincent's territory if he wanted to cause troubles to Annete, which is why he didn't dare to go after her, even after she left the Delphini family with Mellie to never return… until today at least.
Carlos was having a bad day, after so many efforts, his son was recognized by the crowned prince and joined his team, meaning his Delphini family was on the right track.