Upgraded head mesh and texture.
Gifs below show the new head mesh before and after:


Her eyelashes were also redone to be thicker and more Shinobu like with slightly sharper ends for a more defined angry look. The cheek blushes were separated and now have their own simple meshes. Her mouth was moved up and a little bit inwards as it was too far out causing her jawDown blendshape to be too low. The eyebrow and eyelash textures were added a gradient as full black was not very good looking. I think it's a little bit too bright right now so I will tweak it next update. Also going to resize her pupil so it's more circular.
Also starting to implement better shaders. Video 3 shows her current shaders. There is a bug where her eyelashes are picking up shadow which turns up as red. Also forgot to turn off a photoshop layer and her skin now looks pinkish. Supposed to be yellowish. Her eyebrows now render on top of her hair, shadows were brought back in (No longer doing hard bakes of scenes). The next step now is to finalize new shadow shaders for her skin. it is somewhat difficult to make good looking anime-esque shaders with shadows because it introduces too much 3D detail. But I have some solutions I'm willing to test out. For now her face is not affected by shadows (alpha texture channel multiplied by light end result).