I've had both and still have the 26.... I found the Glock more reliable (never had a problem) and much easier to shoot accurately. There was nothing hugely wrong with the CW, but I couldn't just never warm up to it.
But in the end it will have to be her decision. Big mistake if you try to make it for her!
Use a gun that works EVERY TIME.
Florida Glockers Club #1040
Big Dogs Club #1592