She can avoid fad diets by not going off of what everybody tells them but by what she feels like eat until your not hungry not till your full thats a good one and only eat when your hungry and take food a little at a time and eat balanced like the right amount of veggies and meat and dairy I know it sounds dumb but I used to eat until I was full and I was 180 pounds but I am down to 160 now and I also worked out to. bassically just eat right and be fit it is so simple