After helping her father claim an entire galaxy and subsequently registering it with the Universal Accord Commission, the Knight princess had nothing else to do. Her first instinct would have been to return to Alexander's side.
However, she decided to hold back, seemingly.
Claiming a galactic territory was but the first step in managing it. Forces would have to be deployed all over the galaxy, and that required a lot of manpower and energy. This was where Julia stepped in.
With her abilities, she could cut travel time short, clear out monsters and void creatures who dared to challenge her might. Julia did everything she could to help her family's forces take absolute control over the galaxy.
Several months of work had allowed the Knight forces to progress a lot faster. The central star system chosen to be the heart of the Knight forces had already achieved a level of development no less than what was already in the Empire.