on Track
"Vic:"
I think you have made an excellent choice for SD; for you and your wife.
And also your choice of ammunition. Exclude the CCI stuff.
I have the 45ACP model, but so far haven't searched for a holster.
I suspect, though, that one of the strap or "bandaid" types will be what you will have to settle for. I have seen some wider ones that may be good.
Though I'm surprised that no one here on THR has recommended one -yet.
Perhaps some "Locktite" or other thread compound will keep the pin in place, though I would examine it closely to determine if there is a misfit or even breakage involved.
Also, you have not reported your wife's reaction to shooting it. Please do so, and my guess is that she will take to it. Many women are underestimated.
Though, I hope if this is her first gun shoot, that you would gradually introduce her; beginning with the 22.
Your trigger control and revolver handling show experience or good instruction from someone.