Guys aren't usually as emotionally attached to objects because we tend to think more logically where women tend to think more emotionally. That's why women make better nurturers. I suppose it's possible, though. When traumatic events occur, as humans we make a psychological attachment to the event with whatever object was involved. The object can help stir up emotions and thoughts of the traumatic event and so we want to detach ourselves from the object.
I would guess that this is more likely with women than men because of the way women process information compared to men. Now what you have to do is figure out for yourself how you want to handle this information. You can sell the pistol and buy a different one, or you can keep it but leave it at home and use a different one for daily carry, or you can overcome your feelings and carry on with this one. The logical thing (what a guy may do) is to simply understand where the feeling comes from and push it into the "past" folder of the mind and practice, practice, practice with the pistol to retrain our body and mind to be one with it. The emotional thing to do would be to understand where the feeling is coming from and remove the object that sparks those feelings from your environment. Or you can do something in the middle.
The choice is yours and it's a personal thing. Nothing anyone here can say that will change the fact that you're the one who has to make the decision. And you're the only one who can say what the right decision is. Either way, just be sure to stay armed and stay sharp. Whatever you chose to carry, be sure to practice with it till you can't get it wrong, then practice some more.