Just before she does so, Applebloom, who had been peeking from behind an open door, rushes into the room and shields Wedge with her body. Wedge, one of the protagonists, is told all of the above by Celestia, who has him at her mercy and is willing to kill him to ensure his silence. For example in My Little Pony: Forensics is Magic, it is revealed that most of the killings were orchestrated by Princess Celestia, since the body parts of the victims could be used in the creation of Homunculi, who could both replace the victims as well as provide horsepower for farming, which there was a shortage of according to Celestia in her Motive Rant.
Even Twilight Sparkle would have been hard-pressed to do so.