You don't have to tell them anything about weapons. The cop disarming your wife broke the rules of the game. At that point, they're the criminal, not you. Don't let them get away with that.
There are a lot of dirty cops in Florida. Beware.
I carry because I have a stalker - I have reported this guy 15 times to the local cops - they don't understand the laws, and really just get aggravated when you question them. I just gave up even reporting stuff.