Here is a picture for reference of gold base color bleed-thru on a blue Ameraucana. This male was the brother of the black male I kept for breeding and you can see the gold in the wing starting to peek out.
That may be your problem child. Looks like what you get when a single comb is crossed with a pea combed bird. Didn't see that at first. She's definitely not pure for pea comb, though I've had pure Ameraucanas with less than ideal pea combs, too.
You may have some base color bleed-thru, but they are pure Ameraucanas, looks like to me. I owned a black Ameraucana male with severe base color bleed thru who also passed it on to some of his sons. He came out of good breeder stock, too. It happens.