Art Licensing Agreement (Shop's Logo Dispute)

I was hired to create a large art piece for someone for their shop. They then decided to have it also be for their shop logo and have me make a smaller one for their shop logo. When i gave them the logo package price she shied away saying it was too expensive & she just wanted to use it for promotional purposes and still havemy name on it, my copyright, etc. She wanted me to print up tees for her with the image ( a business I have on the side etc. ) all of this I have saved in emails. I gave her a very discounted rate and on our bill which she signed it has the limited uses for the logo and it states that she will have no copyright designated to her. Now she wants to use the image all over the store, print up mugs, calendars, tee shirts through someon else, etc. we are working on a licensing agreement. Her husband is an attorney and he is saying that she should only have to pay the difference in the logo package costs becasue she did not understand and the licensing agreement is so much more than the price of the original logo package that would have given her the copyright rights. What rights do I have? I have the original art and the piece is copyritten in my name?
- A

[randalljd]

See your other post.