my girlfriend is trying to lose weight. Shes been dieting since april and tracking all of her food and intake. She only eats 1600 calories and shes 217lbs at 5'9. shes barely lost 20 lbs in 6 months. As of recently she is walking over 13000 steps a day and lifting for 3 days a week for about an hour and only lost .8 lbs in 3 weeks. Shes starting to break under the pressure. She hasnt been cheating at all on her diet. what exactly is she missing?