She wasn't wrong.
As the members of the cohort left the room to give Nephis time to rest, Sunny was deep in thought. Changing Star was an Ascended Tyrant now. Killing her was much harder than assassinating a mundane child that was protected only by the dwindling forces of a fallen clan, especially due to the nature of her powers.
In fact, short of sending a Saint to do the job, nothing the great clans could throw at her would work. Saints were a precious resource, however, and more than that, rare enough to make their movements almost impossible to hide. Unless the Sovereigns were ready to abandon all pretenses of civility, there was no easy way to get rid of Nephis anymore. She had ensured that by becoming a Master directly.
The situation had fundamentally changed.