No law of chivalry demands that a man allow himself and his loved ones to be assailed by a woman with impunity, simply because she's a woman. If she can dish it out, she can take it.
“No law of chivalry demands that a man allow himself and his loved ones to be assailed...”
Exactly. A man’s very first obligation is to protect his wife or other loved ones. Chivalry pales in comparison to the first obligation.
The guy did a good job stepping up.