Just by going to see a movie, it is really easy to get the idea that women are natural victims. They are portrayed as unable to defend themselves and go into a panic as soon as they face a challenge. But nothing could be further from the truth.
Martial arts training is an excellent method to make women feel empowered. One learns to relax under pressure and use their wit rather than superior strength. The same is true for men as well.
Aikido and Tai Chi are two of the martial arts where you are most likely to find female practitioners. But women are quite capable of practicing any martial art of their choosing.