Pretty hen! If the legs have a green cast the pads of the feet are probably yellow which would indicate yellow skin, not white and thus a cross. She's got alot of purebred Ameraucana traits though so so you have a pretty good chance of blue eggs in a few weeks.
You can never go wrong with a breed club. Many of the BYC members are part of the Ameraucana Breeders Club. Check out the directory if you havent. Ordering chicks is painless. It costs more than eggs, but you have a sure thing and its way more fun to get them. Id make some calls/emails...