She wants to sell the gun because she thinks it is jinxed.
I know people say that kind of thing jokingly, but you may want to work with her to get rid of that type of thinking.
Reasons to sell the gun
-It reminds her of an unpleasant accident (logical)
-it may be jinxed (not logical; how could a gun magically affect her concentration and cause her to shoot her own leg?)
Reasons to keep the gun (bear with me)
-It will remind her not to make the same mistake! Seriously, do you think she would ever be careless with that same gun again??
It's natural for the mind to look for, and sometimes settle on, external causes...but there is only one variable here that mattered, and that was her safety protocol.
It seems like a terrible reason to sell a gun if nothing else has changed. Plus, she needs to take full, 100% responsibility for this one in order to avoid future accidents/negligent incidents.
I am very glad she's okay though.