Yes, she is definitely a morph! I know because I have figured out the secret to this previously difficult question.
If the animal has a reduced pattern, it is a morph. This morph was previously unidentified (leading to all the confusion!), but I hereby name it: Robin's morph!
If the animal does not have a reduced pattern, we'll still have to fall back on our old pactice of trying to identify if it is a yellowbelly, a fire, a browned out pastel, etc.