Yes, some companies put care and thought into their WSD. You will look at the geometry chart and see a very distinct change in the numbers from the same size non-WSD. Some companies just "shrink it and pink it" they may use shorter cranks, narrower bars and short reach brake levers but overall it is the same bike as their men's bikes. True WSD works great for me (short torso, long legs) but my mountain bike is an unisex. The company (Specialized) uses shorter top tubes so it just worked for me. My previous mountain bike was a true WSD (changes in many parts of the geometry) and fit awesome. So find a good fitter and make sure what she needs if you are pretty worried.

I learned to ride on a "good enough fit" now on my third mountain bike I am strating to find preferences in bars, stems, suspension, tube lengths. Fit isn't as key as a road bike just don't want to be too off.