To toot my own horn, just a bit, XiaoXiao doesn't come with textures in her primary product package, but has an altered for Aiko version of Xie Reborn's textures available in the freestuff (which requires RTEncoder to unlock). As far as fully modelled epicanthic folds, there are very few out there. Victoria 4's base morphs come /really/ close to a full fold, and can, with a resetting of the limit, provide a decent 'fake out' for them.

However, you may not want the epicanthic fold, because you sited a character who is notably lacking one. For that sort of look, Idler and Kobamax's girls are perfect, as they represent the Asian 'ideal' look, which I personally find strongly resembles Caucasian features (Much like Aki). As in many animes in general, Aki wasn't intended to be Asian, but to be white. Nothing of her facial structure suggests a prominantly Asian heritage.

http://i330.nopdesign.com/skins/phone/Aki_Ross.jpg
Is a good example of Aki's face, just to help out the Original Poster. :)

Kreations By Khrys