You know though, there's no guarantee that they actually are trying to low ball her because of this thread. They may just flat out be trying to low ball her because she's young and they think they can get away with it because of that.
I am assuming that they found out about her and her dresses on this site. If they are doing their job than they would have seen this thread. Just my opinion. I just find it interesting that the price wasn't stated right at the beginning when they were first interested and only came way after this thread was posted. Most people would want to share exciting news and they might have waited for her to react. PLUS, her initial post was that they were interested in the pop tab dress and NOW it includes both ... they did their homework, trust me.