Jessica Day George likes chocolate, knitting, books, travel, movies, dragons, horses, dogs, and her family. These are all things to keep in mind if you ever meet her. For instance, you could bring her chocolate to make the meeting go more smoothly. You could also talk about how adorable her children are, even if you have never seen them. You could discuss dog breeds (she had a Maltese named Pippin, and grew up with a poodle mix and a Brittany Spaniel. Right now she has a Coton de Tulear named Sunny). You could talk about Norway, and how it's the Greatest Place On Earth, and Germany, The Second Greatest Place On Earth. You could ask her about yarn, and indicate a willingness to learn to knit your own socks, if you can't already do so.
And, well, you could talk about books. Jessica's books, other people's books. It's really all about the books. To paraphrase Jerry Seinfeld: Friends, family, school, they were just obstacles in the way of getting more books.
She would like it if books came with chocolate to eat while reading them.