Long time ago, on our honeymoon, my wife and I were in the Virgin Islands. We were in Charotte. Walking in one of the ondoor malls. Well, a purse snatcher snatched a womans purse behind us and ran past. My wife, pointed at him and said, "go".
Thats what they teach to dobes & rotts.
I hope your still not being treated this way. :P She wouldnt have to carry a firearm, all she needs to do is say GO!