Fred:
If your wife would be willing to handle the recoil, the R9 would be ideal for her CCW. Mine is not, so she carries this Seecamp chambered for .32 ACP:
I have a Guardian chambered for .32 ACP, which I sometimes carry as a backup:
For elegance and "cult-gun" status, the Seecamp wins.
For durability and ease of maintenance, the Guardian wins.
Both the Seecamp and the Guardian are the straight blow-back design, which results in more felt recoil than a locked-breach design. Nonetheless, my wife finds the recoil acceptable -- and she is what you might call "recoil averse."
I have no experience with the Kel-Tecs, although some people whose opinions I respect think highly of them.
Good luck with whichever design you select for your wife.