I just noticed this today and can't unsee it. For some reason Cass has a gap between her gloved hands and her arm; there should be flesh there but there is just thin air, it looks like she has disembodied hands.
http://i206.photobucket.com/albums/bb230/SwampLord450/ScreenShot1.jpg
The only mod I have that I think could conceivably affect Cass in any way is the Unlimited Companions mod, although I don't see what this would have to do with her wrist textures. I would greatly appreciate if anyone could point out either the cause of this or how to fix it, in GECK if necessary, as now that I've seen it I can't let Cass stay in her normal outfit as it's just too immersion-breaking to see her hands floating around.