Women are great for training kung fu, but men should train with men and women should train with women.
I don't care if this isn't PC or fair, the fact is that a man who is raised as a gentleman won't want to hit the woman. Women rarely have the intention to really train for combat. If they do, then great tremendous respect, but for the most part they weaken the training environment and they cause injuries.
Women don't know they have power and every time I have seen an injury in martial arts it has been from a woman. They overpower because they perceive themselves as weak compared to men.
A woman should train with men only after lots and lots of advanced training. Again..its not fair, but life isn't fair and that is my experience after being in martial arts since I was 5.