Yep, there is a displacement map and I'm beginning to think the model was created, or at least finished, in ZBrush from which the displacement map was then created for use in Maya. I noticed, too, that there IS a ZBrush file in this "Aleysha" bundle. I don't have ZBrush on my newer computer so I'll have to install it so I can view that file. I think it will probably answer the question. I'll get back to you on it.

Mike