Did the extra weight of the Old Model Vaquero create any problem for your wife?
No it didn't. She liked the added weight to tame the recoil of the 45 Colt round. With that said, she does like the lighter weight Model P's better now. What I have found with my wife...if she likes it she likes it and if she don't she don't.
She never knows until she tries a gun. I suggest you just let her try them, and if she does NOT like the weight, buy her different guns and keep those for yourself.
OT a little, but I could never get her to try my '97 12 ga. She shot a 20 ga double and it kicked her pretty hard. I kept telling her a 12 with light loads would kick less. FINALLY in one match she tried
"my" '97. On the next stage it was
"the" '97. By the time we got to the last stage, I was shooting
"her" '97.