I'm a bit confused. It seems like your cousin is having sex. But you say she's still a virgin?
Is it because she hasn't had PiV sex? But that's not the only valid kind of sex. I guess everyone's definition is different. But if I was doing sexual activities with a partner, I wouldn't consider myself a virgin anymore. At least not if we were touching.
I mean I was a virgin until age 23 and I think it helped me develop a healthy solo sex practice and learn what feels good on my body. So I get that.