Although I have not yet read her book, I appreciate her standpoint and willingness to give God all the glory for her transformation! As Lucy points out at the beginning of the show, motivation is what determines whether a goal of weight-loss is sinful or not. Valuing the opinions of people, or growing in Christ - what will rule you?
Although anorexia is much less common than bulimia, it is a dangerous obsession which still controls many Christian women. Listen to Michelle's interview here, and be edified:
As an epilogue, Michelle is now completely free of her eating disorder, is walking with Christ, and is six months pregnant. Praise God for her testimony!