I would agree.
Try to find a shield, Ruger lc9 or the like.
Here is a comparison link Pistol Size Comparisons | Handgun Club of America
to see a few different pistols compared side by side.
Try and stay with 9mm. They are ALMOST as small as the .380's and as long as she isn't going to have to conceal in a G string, or has trouble with recoil, it really is a much more effective caliber.
Here is another comparison W/O pics. Concealed Handgun Comparison Chart - Condensed Version
One of the best ones was the Mouseguns page, but sadly, with the passing of the Doc, I believe the site is down and gone.