Law enforcement officers attitudes towards women have changed over the decades. It was once more likely for an officer to ensure that a female drunk driver got home safely rather than put her in a jail cell. Women account for a larger percentage of drivers over the last several decades. The growing number of female DUI arrestees is due in part to the growing percentage of females behind the wheel. There is no doubt that the changing role of women in American society has played its part as well.
More women are in the workforce, and there are more female professionals.
Therefore, more women have adopted lifestyles that are conducive to a DUI arrest. Studies have shown that women tend to score higher on breath testing machines. This is because the machines are set for an average male's lung capacity. This is inherantly unfair to women and should be addressed by your lawyer.