Depends on the stock. The solid composites like the Bell & Carlson Carbelite can be cut to just about any length, while stocks like McMillan and others can be ordered with a specific length. In cheaper stocks, I know that Ram-Line stocks can be shortened up to 2". Not sure about the other brands. Your best bet may be to get a cheap wood stock and gradually cut it down until you find a length that she likes. Make sure you include the recoil pad too, if you're going to use one. Then you can custom order the right length of pull.