I read this a while ago about said topic when this came up on reddit a while back
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As I said in the other comment I have experience in martial arts, and I've seen several unfortunate women take kicks to the nether regions, women who stupidly didn't wear a pelvic protector, assuming that since they didn't have balls they wouldn't need them. That is a sensitive, fragile area for women as well, it's just largely unknown because it's a lot harder to hit than it is on a guy. A strong enough blow can damage the tissues of the vulva, cause ripping or tearing, and it can also break or shatter the pelvis. I may not be a woman, but I've had the training to know the medical facts about how physical blows affect parts of the body on both genders.