I went on a diet about 3 months ago because I was exposed to..well lets just say I was grossed out by packaged foods and factory farming. So what I did was quit eating anything processed. Like, if I can't pronounce what's on the bag, I won't eat it. So I lost about 25 lbs in a matter of a couple of months. I feel healthier, I even eat more then before. What do i eat you ask? I eat a lot of beans, vegetables, and if I have a meat craving I eat wild game or home grown meats. I don't drink or eat commercial foods at all. I go to my local farmer markets and fruit stands for eggs, beans, vegetables etc. I drink a whole lot of fresh coconut milk, eat a lot of bananas, you name it and I will eat it if it's not commercial. It's the best thing I ever did for myself and I look great, feel great, and eat more then ever. Since your friend doesn't seem to care about herself enough to make a change, maybe she cares about other things to make a change. Say for example, if she's an animal lover, expose her to the realities of factory farms. Show her how these big food companies are putting crap in their products that have the vitamins taken out of them, then sugar and salt and other things added, and toxic chemicals too. She is living proof of this. I bet you a million bucks I eat way more then her and am healthy, fit, and extremely energetic. Anyway, a change like this is very drastic. My moral fiber comes before food. Sometimes people need a reality check. Good luck with this, I know it's painful for the both of you. Let me know if you need recipes etc.