And when looking at bows, to get the best peformance you should try to find sone that she'll be shooting at the upper end of the draw length range. Just an example, but something like the Martin Leopard with the mini-MPro cam. Any bow that changes draw length with a module or rotating module should not change draw weight to any extent so a 50# bow should be plenty. If after getting it set up it only draws 48#----who cares? Certainly no deer.

How much weight she'll ultimately be able to shoot is also dependent on how aggressive the cam is. The more aggressive the faster the bow, but the harder it is to draw. Drawing and shooting a bow is supposed to be: #1-easy, and #2-fun.