This is fucking stupid.
And his comment is the worst part; just the absolute worst idiocy, particularly as it is so fucking common in the real world, and has hurt so many people in reality...
"No, I'm sure she'll behave if I just..."
No, sir; she will not suddenly become a completely different human, with a totally different personality, if you "just" anything.
That sunken cost fallacy is really doing a lot of work, here; and I despise it.
She will not suddenly become a different person, and have everybody smile like a child who has never seen or heard of harm.
Pull your head partially out of your ass and slap her the fuck into place (socially; literal slapping should involve consent and a safe word)