Yes, she is an EE, and she is the possible egg layer. The only reason I thought she might be the layer is because of her strange behavior. I've been told EE's can lay any color egg, including brown.... which is why I am unsure if its her (Ruth, pictured) or Rose . Rose, my lav orpington, is the only one I know for sure will lay a brown egg.
I have 2 blue favaucanas who are supposed to lay green eggs, and 2 EEs, and 1 lav orpington. I feel quite certain the egg layer is not my other EE, Blanche. She still seems too young and under developed to be laying. I was hoping my EE's lay a color other than brown, but I'd be happy with anything!
I've got 4 BOs, 3 lay light tan color eggs while 1 lays a darker shade (1st pic)... You are correct EEs can lay any color eggs. The 2nd pic is of the eggs my 2 EEs (greenish) & 2 Wyandottes (brown) laid.