As long as Ketis gained prominence due to her own merits as opposed to leaching from Ves, she would rise to become a new power centered around herself.
What this meant was that Ketis had the potential of becoming the second strong pillar that propped up the Larkinson Clan!
Even if Ves became utterly disgraced and ruined one day, so long as Ketis remained clean and proper, she could easily take over the burden of supporting and sustaining the Larkinson Clan by herself!
The ability to breach dimensions was just too valuable for her importance to be any less.
While this meant that Ves would not be able to command her as directly as before, it was worth it as he could shift more responsibilities over to her, thereby relieving himself of some of his undesirable burdens.
All in all, helping Ketis grow up and become a powerhouse in her own right was incredibly beneficial to his own interests.