Yep, if she was from a major hatchery, she's an Easter Egger. Hatcheries sell them as "Ameraucana" because they make more money that way.
Here's the BASIC rundown:
ARAUCANAS: Rumpless, ideally should also have TUFTS (small "wings" of feathers that grow from the ear area, NOT the same thing as MUFFS), must have a peacomb and should lay blue eggs. Come in several standardized color varieties. Must have YELLOW skin. Most varieties must have WILLOW (green) legs, with the exception of whites, which must have yellow legs, and blacks, which must have dark willow to black legs.
AMERAUCANAS: Tailed, have MUFFS (fluffy poofs on the cheeks that look a bit like fuzzy earmuffs), must have a peacomb and should lay blue eggs. Come in many standardized color varieties. Must have WHITE skin. All vareties must have SLATE (blueish-gray) legs, with the exception of blacks, which must have dark slate to black legs.
EASTER EGGERS: Almost always tailed, some have muffs, might have any type of comb though peacomb is most common, may lay blueish, greenish, brown, or any other color of eggs. Do not come in standardized color varieties and do not breed true. May have any color of legs, though willow (green) appears to be the most common. Their description defies standardization, so they are not accepted as an actual breed.
Hope that helps.
-Anne
