If that were the case, he could clearly face libel charges for the website/facebook page, but not for the billboard. Still, when I Google that, I find a Facebook page that used to be the National Association of Needed Information, and has been rebranded as the Coalition About Needed Information, with no reference to her specifically. The Google cache for that Facebook page has the references to Nani, but none identifying the woman by her full name. So I don't know where you're looking.... I'm not finding it.