Daring to utilize energy that one knows nothing about naturally leads to backlash.
It's not just this chaotic energy, even a true elixir shouldn't be consumed continuously!
As for this Princess of Danboro, Hill didn't know what was going on, but he had already figured out Ellie's life trajectory.
She relied too much on her own luck... However, the first time, the second time, her meager fate did indeed help her suppress the minor damage that came with power, but as she wanted more and more, and the energy she absorbed grew stronger, her wall of soul, which was at the mortal level, could no longer save her.
Even if Hill's arrival didn't push her into this madness, she would have eventually led herself into another kind of spiritual disorder.
Hill recalled her original fate... Alexis would have let Lind kill her, probably because she was no longer of any use to him.
