Who refers to people, "that" refers to animals, places and things. Another subtle usage correction missed. Not unusual. While both are marginally accepted, the former is preferred. Regarding the write up nonsense. Yes, in extreme cases a paper trail is necessary but for someone (relatively) new with little knowledge of the process and culture leading by fear is going backwards. One will never gain trust in a manager the instant they begin a trail, or at least infer or threaten one. Ask questions, have an intelligent conversation (if the receiving end is capable) and think things over first. Young managers will learn, maybe. It just takes time.