Many of Boyer's laws concern public health in the environment, where "environment" is defined liberally. She takes on lead paint around babies and monitoring radon levels as well as photoshopped models. She's also a member of France's National Assembly's Delegation on Women's Rights. So this proposed law is right up her alley.
My French is rusty (I got through the bill summary on her page just fine, but only after having an idea what the law was about - that kind of rusty), so I'm sure I'm missing some big pieces of her history... But reading her homepage makes me want to make a moue, stamp my foot, and whine that I want a Valérie Boyer. *whines*