I am a cave diver & beginning to learn CCR for cave diving (maybe eventually some depth (trimix), but doubt it would be much over 300ft). Here in the Mid West, there are not very many female technical divers, but there are a few.
Because most women are mothers, there is the tendency to avoid risky situations,.... basically to ensure their own safety for the good of the family. I am in no way saying this as a negative to those who do engage in technical diving,.... but rather just thinking how I would think most mothers who are offered the chance to engage in such activities. That said, I am single with no children, so am no real authority. I think most men get into these sports for the sense of adventure. Most women have no desire to pursue such interests,.... they are quite content with diving on the reef looking at the magnificent life around them. I would say on the average, most women are more risk adverse than men.