Beyond erring on the side of "user error" (putting her with one of the two pastel-carrying males), it's possible she may have retained sperm from them even if they hadn't bred this year.

Post pics after they shed too, please. I've seen a few people with tough calls for pastel/super pastels. I see what you're saying about the blushed heads, but to me the bodies seem dark for supers. I think it'll be easier to make a call then.