You know, she could possibly sue under these circumstances for 1st Amendment infringement, because the guy went out of his way to make it so that what she did would be construed as breaking the contract. Of course, in the American justice system her options are limited to small claims court or paying out the nose to file in a court that will probably dismiss her claim as petty.
I have learned, by living in another country, that America's rules are most flexible and it is a damn good place to live. However, sometimes, the rules make it nearly impossible for some people to experience the same rights and freedoms as others. The effort to make everything fair eventually backfires and someone has to lose. Unfortunately, I think this poor wreath woman is one of those losers. It sucks.