Marian: The thing about Grown Ups is it starts at the end in that all the characters in the book -- they're this glamorous family of three brothers and their wives, their ex-wives, and their adult stepchildren. They're at a dinner party. They spend a lot of time together. They get on very well on the surface. Underneath, things are far more complicated, as they always are with any group of people. Three people have their secrets outed because one of the wives gets a concussion. When I started the book, I knew that I needed secrets. Money is always a good one. Infidelity is always another one. Then I was thinking about, what would I hate to be in a situation? I thought addiction because I'm in recovery for alcoholism and I really understand the secrecy. I don't have an eating disorder. It's really important to say that. I understand the burden of it. The idea of this woman suffering from bulimia came to me. I feel like as eating disorders go, bulimia's a particular brutal one because you hide in plain sight. With other eating disorders at either end of the spectrum, it's evident. Your body is your evidence that you're ill. With bulimia, people kind of trudge on for years and years with this monkey on their back, with their voice in the head, and nobody really knows. I thought it needed to be written about. Luckily, people who have bulimia or who are recovering have read it and they said that I did it accurately, which is really important always. When I write about somebody else's journey or their pain, it's so important to honor it and do it properly.