Shocked and horrified would be the appropriate reactions to that scene IF we believe him about that. VC is all about unreliable narrators. Armand is telling his story to David here, trying to intimidate him. Did Armand really do it? We don’t know. If he did, could Louis really forgive him? EVER?
… or, was Armand really trying to help her, as he claimed? “I tried to grant her fondest wish, that she should have the body of a woman, a fit shape for the tragic dimension of her soul.” -The Vampire Armand.
Who knows?! #Your headcanon may vary.
In related info, I have only ever seen one fanart of this scene… beware, once seen cannot be unseen, but I love it bc it truly captures the moment:
❝ You whining coward of a vampire who prowls the night killing alley cats and rats and staring for hours at candles as if they were people and standing in the rain like a zombie until your clothes are drenched and you smell like old wardrobe trunks in attics and have the look of a baffled idiot at the zoo.❞