MSW gives a primer on the use of deadly force.
If that was a true zombie apocalypse, I would accuse her of wasting ammo. One shot to the head should be all you need to take down a zombie.
At the risk of reducing my own chances to win, http://www.weapon-blog.com/gun-giveaway-contests/ has been updated with all the gun and gear related contests that I am aware of for
Go forth and win… As always, feel free to share wherever you can.
If you are aware of any that I do not have on the list, please let me know by using the form located at http://www.weapon-blog.com/contest-notification/.