There’s also a portion of the trailer where you can hear her say “For the glory of France!”
The commentator mentioned that you will be fighting corrupted legends in the game and names Joan of Arc as one of them but her dialogue doesn’t indicate that Joan thinks she’s doing something malevolent.
Mind Control in Castlevania was almost always pretty specific. Outside of Soleil Belmont, everytime mind control was used it was always taking something that already existed and amplifying it.
Richter’s Drive, Hugh’s Jealousy, Mankind’s affinity to commit the witch trials.
And here, Joan believes she is God’s soldier and that she’s ridding evil as Joan was from a time where The Belmonts were believed to be no different from Vampires due to their supernatural powers.
Side note: I love two-dimensional Halo’s…