I have a co-worker like this. Religious woman, hates hearing swear words infront of her. She tried early on to police what I said, I would say fuck and she'd cut me off and try correcting me with "fudge", shit "sugar", damn "dang", being aussie talking with my other co-workers we'd drop cunt hear and there and she'd blow a few blood vessels.

So, everytime she tried "correcting" me or any of us, I'd day it again and again until she stopped. She slips up every now and then 5yrs later but doesn't try actively to police us. If she ASKED me politely I would have made a conscious effort to tone it down a tad. But nope, she tried being a cow about it. Even threatened to wash my mouth out with soap