Well, my son started at age six and has progressed every year. I would suggest getting her a selfbow or a fiberglass bow to begin with. You can usually get one in 7-8 pound range. When we first started, his arrows couldn't even stick in a bag target. You may want to get some 2" insulation. They're fairly cheap. Here he is at age ten shooting a Bear Bearcat at 25 pounds (it actually used to be my mothers bow when she shot competition, my wife shoots it now). The bow is 66" long and he is 54" tall. His regular bow is a 20# selfbow hickory/cherry.