"Overlapping History" 

Right now, Ainsley's situation was indeed similar to the Godfather back then. 

Even though Ainsley had only lived in this world for two years, much shorter than the Godfather, who lived in the new world for more than decades, Ainsley still caught up quickly to the realm of domain masters. 

For multi-ability users, they didn't need to create domains based on all their abilities, and just a domain based on one of their abilities was enough. 

More often, multiple-ability users could actually reach the domain realm faster than those with only one or two abilities, because they could find the ability that really suited them best, which led to enlightenment to create a domain. 

Like Ainsley now, her overall strength was actually still way lower than the Godfather back then, but for various reasons, and maybe because the baby's resources were greater than the Godfather back then...