Where are texture in NIF head?

[noobshi]

Finally fix my Skyrim, so I'm still trying to put custom face on Serana. Fixed the neckseam, but now I have to deal with head and color mismatch.
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I open up the NIF from Steam\SteamApps\common\Skyrim\Data\meshes\actors\character\FaceGenData\FaceGeom\Dawnguard.esm, 00002b6c her NIF.

But I can't seem to find the head texture path.
free image hosting. Any expert know where the skin for the texture usually located at?

[yatol]

seranahead

then lighting thing

then texture thing

and there's some data\texture\actors\charactors\...

[noobshi]

It was blank for some reason, thanks !

[noobshi]

Actually, 1 more thing I want to ask. How do I know what body NIF and texture she's using? Like her head NIF point to the folder and use this specific texture. What point her to use a specific NIF or texture for the body, feet, and hand? is it the Esp? If so how can change it?