Sans weapons if a woman knows a martial art or is suitably enraged there is no doubt she could probably injure or otherwise deter a a full grown man from casually harassing her, but in most cases this is seen in situations of a structed martial art grapple or where a man is not taking her seriously and is not prepared to be attached.
Just as a casual observation over the years, in friendly playing around, I have noticed that women can have extraordinarily strong legs. I’m 6’3" and I have dated several 6’ and taller, quite strong women, who could probably have kicked me silly if they were so inclined, but in horsing around on the couch I noticed their upper body strength was not even 1/3 to 1/2 mine and I’m talking about powerful, athletic women giving their maximum. Now granted I’m pretty powerfully built but so were they from a female perspective.
Men and women are built quite differently with respect to bone size and density, muscle size etc. In real life if a woman and man of equal weight, height and with both in good condition got into a serious fight and it went to the ground, as 90%+ of serious “I’m going to kick your ass” scraps between matched combatants do, the woman, regardless of martial arts training, would normally be at a very serious disadvantage because of upper body strength disparities.
Unless a woman can engage a man of equal size in a rules dictated, structured marital combat situation or the man is
toying with her and not prepared to really fight (and she is) it would be almost impossible in a size, weight and condition matched fight for a woman to defeat a man in a femini a’ mano “real” fight.