Great story of a 12 year old girl fighting back: http://www.pnwlocalnews.com/whidbey/wnt/news/45442782.html!
According to this article, the girl and her older sister were jogging in the evening. The older sister was ahead when a man emerged from the bushes and grabbed the younger girl. According to KIRO 7 news he grabbed her elbow and told her to "get in the car." She fought back, kicking him between his legs. He let go, and she ran.
The KIRO 7 news story interviewed their father about the incident. He was obviously relieved his daughter fought the assailant, and hoped other parents would teach their children how to defend themselves. Fact is, most women who fight back prevail.
That bears repeating: most women who fight back prevail.
It's worth learning how, and when, to fight.