WHY, Coach? Is it ego? You recruited a player and then want to change them. I can understand a tweak or a 'have you ever tried ..." but to get them to buy into a whole new cookie cut hitting system is not a good idea. The player has worked and had success with her current swing but now you are going to enlighten them with how it is really done. Happens in the minor leagues of MLB too. In David Eckstein book Have Heart he tells how he almost got coached out of ever playing in the bigs. BTW, his book is a great short read for encouraging positivity.