[goatinaboat]

She basically said she was going to put my wife on blast and out her as a racist. Ridiculous (Hilarious, even, in retrospect). My wife didn't respond, of course. She immediately looped in her admin

Sorry, but as others have said your wife is the bad guy in this story. She abused her authority and bullied a kid, then had an “oh shit” moment, as all bullies do, when someone stands up to them. She is lucky that that kids mother is a better person than her and let her off with a warning.