Technically an Easter Egger by definition, due to the colored egg gene. However, she appears to be a mixed breed Easter Egger, rather than the EEs which come from hatcheries.
I was starting to think the same; that she must be an EE mixed with something and kept the gene of the egg coloration. @Texas Kiki , here is a photo, hers are the green ones..wait duh haha my b. Hmm..different hues of green too...