WRONG ANSWER, I realize they are doing the right thing sort of by not firing her, but the response should have been:
After reviewing this case, we have decided to Abolish the policy of Not Utilizing Firearms during the course of their duties and instead, We at Papa Johns are encouraging ALL OF OUR EMPLOYEES to get Training and Concealed Weapons Permits. We will begin offering FREE Firearm Safety courses to all Franchisees and openly encourage our Stores to use their GOD GIVEN RIGHT to Defend themselves against these cockroaches.
Watch the pizza crime stop overnight!
Within the confines of current business reality they are doing what they can.
Unfortunately, any person or business with deep pockets that gets involved in a self-defense shooting, no matter how clearly justifiable, is apt to get sued and risk having a jury sympathize with the victim. The most reliable way in today's legal climate for a company to avoid such a thing is for it to make clear that a employee who does anything with a firearm does so in violation of company policy, and thus cannot be construed in any way as having done so on the company's behalf.
The proper remedy would be to have a states amend their tort laws to shield companies from liability when their employees use firearms for personal defense during the course of their duties, while making companies which forbid weapons liable for the safety of their customers and employees while on the premises, or while en route to or from the nearest practical place where weapons can be stored. If e.g. a jewelry store wishes to require that customers check weapons and accept liability in the event that its guards are unable to protect customers from robbers, that should be its prerogative, but companies should be encouraged to minimize liability by simply allowing employees and customers to protect themselves.