Go look at the scene where the mc has a threesome with Claudia and whatever the goofy name Demetria was using, and you can see that they have no vagina.
I've already deleted my futadom folder, so I can't just link it myself. But here's one from OEJ's scene mod:
https://attachments.f95zone.to/2020/05/683299_1590356364454.png
You can see that in the bottom left, Cladia has no vagina. And in the bottom right, that Demetria doesn't, either.
Pretty sure the 'fail' scene from the front area gym job also shows that the dumb girl (can't remember her name right now) that's always with Draga is also lacking a vagina.
So no vaginas on these dickgirls.