I'm not a blog expert, but If she's wanting to buy more from your shop, I would be sure to post all over the place (in blogs, twitter, facebook, etc. , the name of her business and the fact that she likes your product so much, she's wanting more. Anyone reading her blog that knows that she's buying more of your product would think twice about her tactics. Kind of like, you're such a wonderful person by giving her some free advertising and support and get it "viral" that you have a customer that loves your product. As if you're thanking her for HER support. B2B thing. It could be that if her friends or potential customers got wind of that, they might get wise to what she's up to. I'd sell to her and make the world know that she must really LOVE my product.