Brian and Twobit have offered some good advice. I'm trying to remember fellows, there's a few manufacturers that market ladies rifles with the shorter length of pull. I would research the manufacturers for a comfortable gun then pick a good caliber and glass.
"All that is necessary for the triumph of evil is that good men do nothing" Edmund Burke
Browning High Power,XD 45, Protec 25,Saiga 308
Stag AR 15, Ruger mk II 7mm Mag, CCW