You have ALL missed the point (I think). My wife has a Browing HP .40 cal. She is also 4'11' and maybe 85 lbs. When we got the gun she could not rack the slide, so I taught her how to do it by giving her different guns with progressively stronger springs. We started with the CZ-83, went to the P7, then 1911 with 16, then 17, then 18 then 20 lb springs. As she worked her way up, she learned what we all know - it's all about technique, not strength. Problem is, her hands are so small she just can't seem to get enough leverage to rack the slide on guns with stiffer springs by gripping from the rear - she NEEDS front serrations to rack it properly.
I don't disagree with the above comments (looks, upcharging, press-checking) but in our case, front serrations are an absolutely VITAL aspect of her manual of arms.
Tom