Ch. 5: Isis and Horus 

 Nephthys 

And this is Nephthys, the sister and constant companion of Isis. The geographical image on the head of Nephthys (dotted box) was sometimes seen as a shallow bowl supported by vertical beams. This object, like the seat-like object on Isis' head, is difficult to visualize and render graphically and was for this reason commonly depicted in a simplified side view.⁴³

Click on image for normal view.