Well the majority of the NPC's don't have this problem, so there must be something special about the texture that Moira Brown, Lacy, etc. are using. How do I find out which textures they're using? I really don't have the first clue how facegen information is stored and I know they use a variety of .nif files for eyes, face, etc. The interaction between the normal map and face gen data has to be the cause of the issue. For the most part NV Redesigned and its fo3 counter part "fix" it, though not completely, and that changes up facegen and texture to do it. In general though I don't think its something you can completely eliminate, at least not without more work than its worth.