Weak forearms and wrists:  Many women don't possess enough strength in their wrists to keep the club in proper position throughout the swing.  This contributes to improper mechanics and forces us to compensate in other areas.

Suggested exercise:  Wrist curls - Use dumbbells with whatever weight you feel comfortable.  Do two sets of at least 8 curls with each hand, changing the direction your palm is facing for each. 

Do wrist curls w/ palm facing up

And palm facing down

Too much movement:  By movement I mean swaying back to front as well as up & down while executing the swing.  When watching tour players on television, notice how still they all remain during their swing.  Their head and body hardly move and this allows for cleaner and more consistent ball striking. 

Suggested Exercise:  I recommend a regular stretching program.  Increased flexibility leads to a better center of balance, muscle control and range of motion.  All huge attributes when trying to clear the mind and quiet one's swing. 

Flexibility is a must for better golf

Skewing the spine angle: Most women I work with struggle with proper shoulder and torso rotation.  Incorrect body rotation during the backswing is the biggest contributor to lack of distance and overall loss of power.

Suggested Exercises:  Since rotation is mostly hindered by a lack of abdominal strength and back and torso inflexibility, a regiment of sit-ups or stomach crunches along with virtually any flexibility exercises can go a long way in improving your body rotation.  Push-ups represent another exercise that is easy to do in home at your leisure and will add upper body strength which also promotes a more powerful swing.

These are just a few suggestions for basic exercises that can improve not only your golf game but your overall quality of life as well.  There are a number of additional exercises or athletic activities that can help improve your swing and overall game.  The important idea is to choose those activities that you enjoy and STICK TO THEM!  Regularity and repetition are the keys to success. In short, shape up your body to shape up your swing.