That line is also dub only.
Get this, the Japanese version doesn't even explain why Fauder(Validar) did all this effort to brainwash this random ordinary villager.
Her having dark powers is a localization edit and doesn't explain why she's mainly for her persuasion skills anyhow.
In DLC maps, the game does further play up that Aversa isn't responsible for her actions unlike Gangrel.
Pheros is shown as honorable and pleasant, with the characters blaming her infatuation with Walhart leading her astray.
But at least she has some power rather then explicitly being a slave to men and having zero agency at all for her entire screentime.
I like how Aversa hates Validar now and bringing him up causes her trauma, but she still calls Robin big brother in the supports even though the spotpass retcon just said Validar was never even "almost like an adoptive father" anymore, but now just asshole that kidnapped and enslaved her that she always hated. But we gotta appeal to the "little sister" fetish according to Awakening.
I've seen someone who try to defend Awakening or say Ylisse is more gender progressive then Archanea, say Aversa was acting of her free will, but if you erase someone's mind, then magically rewrite their entire personality, sense of self and history to make them fanatically loyal to you with magic, I'm calling that mind control.
Its also idiotic that Aversa was kept alive this long, consider the Wellspring of Truth is known to Aversa, if not common knowledge in Ylisse, it'd be common sense to kill Aversa before she inevitably turns on the organization that killed her family and magically enslaved her.
Oh and Aversa's testimony proves Chrom's father right when he tried to kill all the Grimleal, no one could possibly care about a religion Ylisse hates, there's no way anyone on this wartorn continent would ever be adopted by this organization, Chrom hates it so no one in it can have any redeeming qualities whatsoever.
And you thought the Loptyrians were bad