The article made me assume that she did in fact suffered from it but didn't have pictures from that time. And what you're saying it's true, it's very unlikely for somebody who went through anorexia to balloon up that much knowing how much anorexics learn about calories. Although there are some exceptions (like that purple-haired girl from instaham who has skeletal as a teen and now she posts pics of her with a fatkini) it's very possible that she's doing what you just have said