First, Capella, if you had read the thread... just a few posts up from yours you would have had the answer to your question.

Second, this is not about the merit of the art. I think it sounds silly, too. And yes, that a canvas painted white could be worth millions is kind of ridiculous. But, that's not the issue here. The issue here is that she defaced something that wasn't hers.

I'm not exactly a fan of private property, and I'm certainly not against vandalism on principle, so I'm not going to call for her head. But what you need to recognize is that if you're saying she should get off, you're saying vandalism is ok.