I'd watch out personally and not rock the boat blatantly and instead ask your wife to do it stealthily as another user here just got a new job and started making noise about the way the care home was ran and was fired immediately leaving the long term safety of the residents he was trying to protect lives in jeopardy.
This reminds me of a story I once heard,
"There are two bulls standing on a hill overlooking a pasture full of cows. The younger bull, eager, but lacking experience, says to the old bull “Hey, let’s run down there and f@#k a cow.” The old bull, who has spent season after season in this pasture, turns to the younger bull, chuckles, and says “No, let's walk down there, and f@#k them all.”
So running in with a gung ho attitude screaming and shouting is not the way to go, but observing and anonymous emails are the right way to go imo.