Second Life of a Trash Princess - Vol. 2 Ch. 61

[MangaDex]

 

[Grellow]

didn't expect that the maid had "become" her, that's actually terrifying compared to brainwashing

 

[Figu]

didn't expect that the maid had "become" her, that's actually terrifying compared to brainwashing

Possessed by after having been turned into a brainwashed puppet magically is probably a better way to put it. At least from what I remember when I read this chapter like 4 weeks ago…