Weeks after the inauguration of the Saltstar City & Metal City train line, Nova and Layla had advanced one level and had finally become Sovereigns!
As Vicente had instructed, Nova left the city with a group of Fuller family soldiers shortly after she had advanced a level to hunt for her fourth pentagram.
The plan was for her to have her fourth pentagram before Vicente left the kingdom, so she didn't have much time.
As for Layla, Vicente wanted to take her with him on his journey to the north of the continent. So she was still in the city.
She remained in the city because her promotion was new, and she primarily served as Jasmine's guard.
If she were to be sent to other Congregation of Revelation posts, since she had just been promoted, she would have time to report to a new post.
The most important members of this organization could take time off to hunt for their pentagrams after advancing one level.