VR 760 A Glimpse Of the D
Diana Ross believes that the universe will always have a way to balance itself. Always, no matter what. This was the thought that made her want to create a higher species than the themarians in the first place.
The themarians hide themselves in their dying planet from the rest of the universe because they were too strong to interact with them, at least that was the ideology passed down. They have looked down upon the others, treating them as nothing but space trash.
But if Diana creates a higher species stronger than them, the themarians will ultimately have no choice but to start leaving Theran. Either by their own volition, or the rest of the universe that treated them as gods would finally start asking them for help.
Either way, they will be forced to act and finally start discovering a world out of Theran.