First of all, you should tell her the shortcomings of the weight-loss institution, which is not true. There are many ways to lose weight now, such as slimming tea, which can achieve the effect of losing weight by eating a kind of sugar, some even liposuction, and some massage acupoints to lose weight. In short, the publicity is particularly good and attractive. I often see such shops on the Internet or on some streets. In fact, losing weight is not that easy. If so, there would be no obese people in this world. Therefore, you should have a clear mind to distinguish between good and bad things.
Secondly, tell her that she is not fat and has confidence in herself. Whether you are fat or thin, everyone has various advantages. Being fat is sometimes a kind of beauty. Just don't be particularly fat. Don't grasp your own shortcomings and enlarge them infinitely. You should know how to discover your own advantages and beauty, have confidence in yourself and be casual. Maybe you will lose weight sometimes if you don't pay special attention. So, try not to deliberately change anything.
Finally, sign up for some gym-related courses, learn from a fitness instructor, or lose weight by controlling food intake. Some people like it very much. They know they are fat, but they still can't control their mouths. It's not that they don't want to eat, but try to eat less snacks, eat every day, and don't eat too much. Plus the corresponding exercise. Go to the gym for a run, or dance, or yoga. Learning to dance is a special thing to lose weight. In addition to the effect of losing weight, you can also exercise your own specialties. Practicing yoga and dancing can highlight your temperament, and use these practical actions to lose weight instead of eating something.
Life lies in exercise, don't be too lazy, be diligent and exercise regularly, which can not only increase your physique, but also keep your figure.