Hers has been flawless. I can't give her a better gun to carry than one she trusts and is comfortable with.
That being said you are very close to being #1 on my **** list. Do not tell me how to treat my wife or what is or isn't best for her or myself. You have NO idea how much I love her or what I would do for her.
Simple advise from a fellow INGOer, no need for the ego. No one is questioning your love for your bride.
I just celebrated 18 years with mine, so yeah, I "have an idea".
Kel-tec's are notorious for breaking/failing. Sure, they are good to have in your tackle box or glove box, but they should not be relied upon as a primary carry gun. A quick google of "keltec problems" will get you 424,000 results.
If offering some advise puts me on your list... I'll live with that if some day down the road you might consider there are better options out there for her.
Don't take it personal, it's just the internet.