I'm perfectly content and confident, loading 148 gn. flat nose wadcutters in my Airweight.
Faster followup shots, accurate, and they cut a great blood trail too, unlike round nose bullets that don't open up in a short barreled .38 snubbie.
If I want .38 +P+ I'll probably just go ahead and load 'em into my 3" Model 65 or my 2 1/2" Model 66 K-frames . . . but my "always" on me little Airweight is stoked with wadcutters. I feel quite well protected too.
IMHO, save your wife the grief of having to shoot a light little gun that "kills at both ends." Let her shoot that gun and ENJOY it. If so, she'll be more willing to practice . . . and it will be familiarity, practice and confidence that will be most important in saving her life (or yours) if she ever needs to use it.
T.
PS: Yeah, the little gun will take SOME abuse but why? And, as another has said, bullets can start backing out the ends of their cases under the stout recoil in Airweights. Once you have a gun tied up that way in practice you'll swear you'll never risk your life by carrying any load that does this.
Food for thought . . .