Or at least she thinks she is possessed.
"Don't make me assume my ultimate form"
And that was a truly historic growl.
“Don’t make me assume my ultimate form” is not some statement that she is demon possessed. It’s a reference to a popular japanese cartoon series, Dragonball Z.
I swear, sometimes FR is like an old fart convention, with the common references that fly above about 95% of the posters’ heads.