by yuppiejr on Fri Feb 20, 2015 9:50 am
Reviewing data from BBTI's (Ballistics By the Inch) for 9mm vs 38 spc 2" barrel firearms with a range of ammo types, the 9mm is pushing, on average, 200 FPS faster, and producing 100 ft/lbs of energy more than the .38 SPC loads tested. The 38 SPC is only equal to the 9mm in downrange effect if it's fired from a handgun with at least a 2" longer barrel than the 9mm, or if you compare the best .38 SPC+P+ loads to standard pressure 9mm which add significantly to recoil, flash and unnecessary wear and tear on the .38 SPC firearm.
According to the Massad Ayoob review of the 9mm LCR, when he compared it with the 38 SPC version of the same gun the perceived recoil as observed by himself and a small statured (5') female shooter was LESS with the 9mm revolver. He also indicated the platform was completely reliable, accurate and the moon clips allowed speedy reloads.
My wife also prefers the simplicity of a double action revolver over a semi-automatic handgun in any flavor, but I'd echo the others that have advocated for letting yours test fire some different options and then decide what to buy. A full size 4" double action revolver loaded with quality .38 SPC defensive ammo is certainly a good choice for a "nightstand gun" and there are examples to be found for $400-$500 depending on options/condition (Ruger GP100 or used S&W K-frame). However if she likes the smaller LCR form factor she/you also have a firearm which is of equal terminal effectiveness to the larger .38 but has the utility of being a viable carry gun for either of you as well for around the same price, brand new with a warranty, and uses a common ammunition that you already have around.