I've seen that happen to a lot of people over the years, and she did better than most when faced with a sudden sharp pain from a hot casing. She kept the muzzle downrange, didn't completely freak out/scream, and put the weapon down on the bench before addressing the problem.
Two thumbs up!
"Placement is power" -- seen in an article by Stephen A. Camp
(RIP, Mr. Camp; you will be remembered, and missed)