I think she always did so because he knew she would end up doing hardcore content. If you think about it, not long after she debuted with LOOZY, she was their first model to do some softcore content such as sucking dildos, fake sexe scenes, many lesbian sets with Dohwa, even had a semi-hardcore photoshoot with a fan ... Knowing that, I think we'll never see her face, or at least not on purpose.
Even Jasmine who is apparently Soi / Booty Queen changed her name and hide her face tho we know what she look like already, almost every korean girl showing thei pussy hide their face, because pornography is prohibited in Korea.