Girls, Martial arts with women?

I've been at my self defense dojo for about 4 months and the about 70% of the classes are female, including the instructors. . after about a 2 months of training I got to spar but I asked my instructor if I could use a cup and she said that I can't because I'm not allowed to have advantages and that I will just have to block all the strikes to my groin.

do you think the cup gives women disadvantage?
Girls, Martial arts with women?
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