If you have the email history back and forth you can probably contact the US version of the 'better business bureau' and report her. That is entire legal and it won't cost you anything as a consumer.

As for getting money back etc, it would cost you more to take her to court than it would to just get a new web design company to start over for you.

This is just bad business any way that you look at it, and I truly hope that you can at least report her to your business bureau and have a complaint on file.