Responses
Well, she was trained since young to be like the perfect wife. I think it's not impossible for her to have maintained herself. She seems to do things like the purity ritual often. But yeah it is a trope for the "ugly woman" to not actually be ugly.
May be the orangutan mark's "magic" protected her face? (the orangutan wouldn't want his future's bride beauty to be spoiled by stupid humans' neglect while he was waiting for her to "be of age") LMAO
Call it a nitpick but a woman who's been neglected like her shouldn't look like a dazzling beauty under that mask, perfect eyebrows and perfect skin and all that