Okay, the eyeshadow mesh causes the problem. I just removed it, it's not really necessary and you won't notice the difference.
Anyway, i noticed some other small flaws. There is a lot of ununnecessary stuff in the nif file. I have removed that aswell.
And there are some other things i would recommend to correct. These are only suggestions, so feel free to ignore them completely.
1. The Eye is clipping through the eyelid. Both are in the same mesh, so you need to fix that with blender, 3DMax or whatever.
2. The hair has no UV mapping within. Therefore there is a big gap between the hair and the head. Looks weird.
As the hair uses shaders a NiStencilProperty Node won't work as a solution.
I would suggest to duplicate the hair in your favorite 3D-program, make it a tiny little bit smaller, recalculate the normals inside and remove all redundant parts.
Pretty easy and fast.
3. This one is really minor. The scarf is clipping through the clothing. Hard to notice, but still.
And at least (and just in case you didn't know already), you should
bake your textures into one.
Have fun!