Fleur's concerns were certainly not her paranoia speaking—the three elders were exceedingly powerful and on the verge of unsealing their pineal gland.
When that happened, their abilities were most certain to rise to new heights.
Barring Fleur herself, they were her strongest fighters, but that also meant they shared the same problem as Fleur—that being the Eternal Pills were out of reach.
Without it, they were not likely to live more than two hundred years, which was already way shorter than the remaining lifespan Fleur had.
Naturally, they would be wary of their mysterious foe if they were to find out that said person possessed something as mythical as the Regeneration Pills.
In time, Fleur's ability to keep them in line through fear and authority would start to waver.
And worst of all, the Three Elders yearned for immortality through the Eternal Pill too, and it was now clear that Fleur could not satisfy that yearning anytime soon.
If that was enough to change their minds and