This gun is being carried for self-defense, yes?
If so, the "feel" of the trigger is being completely over-thought.
In a self-defense situation, the LAST thing the shooter is going to be thinking about is how the trigger "feels."
The only issue in that situation is rapid presentation of the weapon, and discharge in the direction of the 8-ring.
If any other thought is in the shooter's head, the odds of survival go way down.
Buy all the guns you want.
Do all the slow-and-deliberate "trigger testing" you want at the range.
For a self-defense gun, it needs to be reliable.
It needs to go bang when the shooter needs to go bang.
And most of all, the shooter needs to be MENTALLY PREPARED to make the gun go bang under severely adverse circumstances.
All this discussion of "too heavy," and "too thick," and "not enough bullets," or "too many bullets," or worries about "the safety" will serve the shooter poorly in the long run.
The shooter needs to pick a gun that works, and practice firing the gun under circumstances that resemble a gunfight.
A Glock 26 works fine.
So do all the other gun-collection suggestions.
But none of them will work effectively until the shooter commits to mastering ONE of them, despite whatever less-than-ideal characteristics the chosen gun may have.
It sounds like OP's wife already is "familiar" with the Glock.
I think at this point, the next move is for her to get some force-on-force training, and to learn how irrelevant the little details of the weapon actually are.