for fun, I googled "BodyGuard Trigger Job"
Interesting results. (didn't really read any of the linked data just the text shown on the search results page).
Seems to be a much discussed topic with aftermarket solutions.
Let me state: I don't advocate any
What I was hoping to find was a mechanical means to retain,detain some of the action while operating the linked trigger,sear,hammer assembly to assist in accelerating the break-in wear.
If you are safe (you and the firing mechanism) to dry fire, you can spend some quality time clicking something other than a mouse and get some results.
12 pounds seems like a lot to me, smoothing any roughness will only help.
You may need to keep this one for yourself and let her pick out a couple of new ones that suit her better.
This would be my solution.